Most people know precious gemstones (宝石) by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It’s more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone’s origin.
Beneath the surface of a gemstone, on the tiny level of atoms and molecules(分子), lie clues (线索) to its origin. At this year’s meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers (激光) to clarify these clues and identify a stone’s homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. “With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from,” McManus told Science News.
Some gemstones, including many diamonds, come from war-torn countries. Sales of those “blood minerals” may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones.
To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles(微粒)called electrons separate from atoms.
The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements produce different patterns, but McManus and her team say that gemstones from the same area produce similar patterns. Materialytics has already collected patterns from thousands of gemstones, including more than 200 from diamonds. They can compare the light pattern from an unknown gemstone to patterns they do know and look for a match. The light pattern acts like a signature, telling the researchers the origin of the gemstone.
In a small test, the laser technique correctly identified the origins of 95 out of every 100 diamonds. For gemstones like emeralds and rubies, the technique proved successful for 98 out of every 100 stones. The scientists need to collect and analyze more samples, including those from war-torn countries, before the tool is ready for commercial use.
Scientists like Barbara Dutrow, a mineralogist from Louisiana State University in Baton Rouge, find the technique exciting. “This is a basic new tool that could provide a better fingerprint of a material from a particular locality,” she told Science News.
1.We learn from Paragraph 1 that __________.
A. an emerald and a ruby are names of diamonds.
B. it’s not difficult to tell where the gem was mined.
C. appearances help to identify the origin of gemstones.
D. diamonds from different places may appear the same.
2.Why did the U.S. government pass law that requires companies selling gemstones to determine the origins of their stones?
A. To look for more gemstones.
B. To encourage violent civil wars.
C. To reduce the trade in blood minerals.
D. To develop the economy.
3.Which of the following facts most probably helps McManus and her team in identifying the origin of stones?
A. Heat can turn ice into water or water into steam.
B. Gemstones from the same area produce similar light patterns.
C. Laser can change a miniscule part of the gemstone into plasma.
D. Materialytics has already collected patterns from thousands of gemstones.
4.From the last two paragraphs, what can be inferred about the laser technique?
A. It is ready for commercial use.
B. People can use the new tool to find more gemstones.
C. It can significantly reduce the gemstones trade in blood minerals.
D. It will bring about a revolutionary change in identifying the origin of minerals.
5.The author wrote this passage mainly to __________.
A. tell us how to identify the origin of diamonds.
B. introduce a laser technique in identifying a stone’s origin
C. prove identifying the origin of gemstones are difficult
D. attract our attention to reducing trade in blood minerals
高三英语阅读理解中等难度题
Most people know precious gemstones (宝石) by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It’s more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone’s origin.
Beneath the surface of a gemstone, on the tiny level of atoms and molecules, lie clues to its origin. At this year’s meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers to clarify these clues and identify a stone’s homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. “With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from,” McManus told Science News.
Some gemstones, including many diamonds, come from war-torn countries. Sales of those “blood minerals” may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones.
To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles called electrons separate from atoms.
The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements produce different patterns, but McManus and her team say that gemstones from the same area produce similar patterns. Materialytics has already collected patterns from thousands of gemstones, including more than 200 from diamonds. They can compare the light pattern from an unknown gemstone to patterns they do know and look for a match. The light pattern acts like a signature, telling the researchers the origin of the gemstone.
In a small test, the laser technique correctly identified the origins of 95 out of every 100 diamonds. For gemstones like emeralds and rubies, the technique proved successful for 98 out of every 100 stones. The scientists need to collect and analyze more samples, including those from war-torn countries, before the tool is ready for commercial use.
Scientists like Barbara Dutrow, a mineralogist from Louisiana State University in Baton Rouge, find the technique exciting. “This is a basic new tool that could provide a better fingerprint of a material from a particular locality,” she told Science News.
1.We learn from Paragraph 1 that __________________.
A. an emerald and a ruby are names of diamonds.
B. it’s not difficult to tell where the gem was mined.
C. appearances help to identify the origin of gemstones.
D. diamonds from different places may appear the same.
2.Why did the U.S. government pass law that requires companies selling gemstones to determine the origins of their stones?
A. To look for more gemstones.
B. To encourage violent civil wars.
C. To reduce the trade in blood minerals.
D. To develop the economy.
3.Which of the following facts most probably helps McManus and her team in identifying the origin of stones?
A. Heat can turn ice into water or water into steam.
B. Gemstones from the same area produce similar light patterns.
C. Laser can changes a miniscule part of the gemstone into plasma.
D. Materialytics has already collected patterns from thousands of gemstones.
4.From the last two paragraphs, what can be inferred about the laser technique?
A. It is ready for commercial use.
B. People can use the new tool to find more gemstones.
C. It can significantly reduce the gemstones trade in blood minerals.
D. It will bring about a revolutionary change in identifying the origin of minerals.
5.The author wrote this passage mainly to ________.
A. tell us how to identify the origin of diamonds.
B. introduce a laser technique in identifying a stone’s origin
C. prove identifying the origin of gemstones are difficult
D. attract our attention to reducing trade in blood minerals
高三英语阅读理解中等难度题查看答案及解析
Most people know precious gemstones (宝石) by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It’s more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone’s origin.
Beneath the surface of a gemstone, on the tiny level of atoms and molecules(分子), lie clues (线索) to its origin. At this year’s meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers (激光) to clarify these clues and identify a stone’s homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. “With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from,” McManus told Science News.
Some gemstones, including many diamonds, come from war-torn countries. Sales of those “blood minerals” may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones.
To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles(微粒)called electrons separate from atoms.
The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements(元素)produce different patterns, but McManus and her team say that gemstones from the same area produce similar patterns. Materialytics has already collected patterns from thousands of gemstones, including more than 200 from diamonds. They can compare the light pattern from an unknown gemstone to patterns they do know and look for a match. The light pattern acts like a signature, telling the researchers the origin of the gemstone.
In a small test, the laser technique correctly identified the origins of 95 out of every 100 diamonds. For gemstones like emeralds and rubies, the technique proved successful for 98 out of every 100 stones. The scientists need to collect and analyze more samples, including those from war-torn countries, before the tool is ready for commercial use.
Scientists like Barbara Dutrow, a mineralogist from Louisiana State University in Baton Rouge, find the technique exciting. “This is a basic new tool that could provide a better fingerprint of a material from a particular locality,” she told Science News.
1.We learn from Paragraph 1 that __________________.
A. an emerald and a ruby are names of diamonds.
B. it’s not difficult to tell where the gem was mined.
C. appearances help to identify the origin of gemstones.
D. diamonds from different places may appear the same.
2.Why did the U.S. government pass law that requires companies selling gemstones to determine the origins of their stones?
A. To look for more gemstones.
B. To encourage violent civil wars.
C. To reduce the trade in blood minerals.
D. To develop the economy.
3.Which of the following facts most probably helps McManus and her team in identifying the origin of stones?
A. Heat can turn ice into water or water into steam.
B. Gemstones from the same area produce similar light patterns.
C. Laser can changes a miniscule part of the gemstone into plasma.
D. Materialytics has already collected patterns from thousands of gemstones.
4.From the last two paragraphs, what can be inferred about the laser technique?
A. It is ready for commercial use.
B. People can use the new tool to find more gemstones.
C. It can significantly reduce the gemstones trade in blood minerals.
D. It will bring about a revolutionary change in identifying the origin of minerals.
5.The author wrote this passage mainly to ________.
A. tell us how to identify the origin of diamonds.
B. introduce a laser technique in identifying a stone’s origin
C. prove identifying the origin of gemstones are difficult
D. attract our attention to reducing trade in blood minerals
高三英语阅读理解困难题查看答案及解析
Most people know precious gemstones (宝石) by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It’s more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone’s origin.
Beneath the surface of a gemstone, on the tiny level of atoms and molecules(分子), lie clues (线索) to its origin. At this year’s meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers (激光) to clarify these clues and identify a stone’s homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. “With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from,” McManus told Science News.
Some gemstones, including many diamonds, come from war-torn countries. Sales of those “blood minerals” may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones.
To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles(微粒)called electrons separate from atoms.
The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements produce different patterns, but McManus and her team say that gemstones from the same area produce similar patterns. Materialytics has already collected patterns from thousands of gemstones, including more than 200 from diamonds. They can compare the light pattern from an unknown gemstone to patterns they do know and look for a match. The light pattern acts like a signature, telling the researchers the origin of the gemstone.
In a small test, the laser technique correctly identified the origins of 95 out of every 100 diamonds. For gemstones like emeralds and rubies, the technique proved successful for 98 out of every 100 stones. The scientists need to collect and analyze more samples, including those from war-torn countries, before the tool is ready for commercial use.
Scientists like Barbara Dutrow, a mineralogist from Louisiana State University in Baton Rouge, find the technique exciting. “This is a basic new tool that could provide a better fingerprint of a material from a particular locality,” she told Science News.
1.We learn from Paragraph 1 that __________.
A. an emerald and a ruby are names of diamonds.
B. it’s not difficult to tell where the gem was mined.
C. appearances help to identify the origin of gemstones.
D. diamonds from different places may appear the same.
2.Why did the U.S. government pass law that requires companies selling gemstones to determine the origins of their stones?
A. To look for more gemstones.
B. To encourage violent civil wars.
C. To reduce the trade in blood minerals.
D. To develop the economy.
3.Which of the following facts most probably helps McManus and her team in identifying the origin of stones?
A. Heat can turn ice into water or water into steam.
B. Gemstones from the same area produce similar light patterns.
C. Laser can change a miniscule part of the gemstone into plasma.
D. Materialytics has already collected patterns from thousands of gemstones.
4.From the last two paragraphs, what can be inferred about the laser technique?
A. It is ready for commercial use.
B. People can use the new tool to find more gemstones.
C. It can significantly reduce the gemstones trade in blood minerals.
D. It will bring about a revolutionary change in identifying the origin of minerals.
5.The author wrote this passage mainly to __________.
A. tell us how to identify the origin of diamonds.
B. introduce a laser technique in identifying a stone’s origin
C. prove identifying the origin of gemstones are difficult
D. attract our attention to reducing trade in blood minerals
高三英语阅读理解中等难度题查看答案及解析
A. Youngsters don’t really know what fashion is.
B. People should care more about their appearance.
C. It’s not sensible to go after brand-name clothing.
D. Styles change more quickly than necessary nowadays.
高三英语短对话中等难度题查看答案及解析
We all know that early birds get more things done by making the most out of their mornings and setting the day right for successful completion of all goals and tasks. 1. Successful people not only have healthy morning habits, they also know how to finish off their day right. Here are some habits that can help plan a more productive tomorrow:
1. Read a book. Successful people read daily. 2. By reading daily, they can achieve better results in their professional and personal lives. Reading will not only make you more likely to succeed, but if you do it before going to bed, it can really help you to reduce stress and progressively calm you down.
2. Unplug from social media. At the end of each working day, the most important thing is to switch off distractions such as WeChat, emails and messaging to create some time for yourself.
3. Go to bed earlier, take a bath, go to that cooking class you have been putting off for so long, or spend quality time with the person you love.
4. Organize the following day. 4. It is really difficult to remember all the things you need to do, so why not write them all down in a journal or a to-do list? Successful people know the importance of a well-planned day and this allows them to enjoy themselves in the evening. So before you go to bed, grab a planner or a notebook and write down your 3 most important goals for tomorrow. 5.
A. But what about the evening habits?
B. Do something you love every night before you sleep.
C. It is also really useful for improving your creative thinking.
D. They all know the importance of educating themselves every single day.
E. Having a well-written plan can really benefit the tasks you have set for the day.
F. Simply lying down and focusing on your breath and body is a significant stress reliever.
G. Be honest with yourself in setting the right amount of time to achieve each individual goal.
高三英语七选五困难题查看答案及解析
We all know that early birds get more things done by making the most out of their mornings and setting the day right for successful completion of all goals and tasks. 1. Successful people not only have healthy morning habits, they also know how to finish off their day right. Here are some habits that can help plan a more productive tomorrow:
1. Read a book. Successful people read daily. 2. By reading daily, they can achieve better results in their professional and personal lives. Reading will not only make you more likely to succeed, but if you do it before going to bed, it can really help you to reduce stress and progressively calm you down.
2. Unplug from social media. At the end of each working day, the most important thing is to switch off distractions such as WeChat, emails and messaging to create some time for yourself.
3. Go to bed earlier, take a bath, go to that cooking class you have been putting off for so long, or spend quality time with the person you love.
3. Organize the following day. 4. It is really difficult to remember all the things you need to do, so why not write them all down in a journal or a to-do list? Successful people know the importance of a well-planned day and this allows them to enjoy themselves in the evening. So before you go to bed, grab a planner or a notebook and write down your 3 most important goals for tomorrow. 5.
A.But what about the evening habits?
B.Do something you love every night before you sleep.
C.It is also really useful for improving your creative thinking.
D.They all know the importance of educating themselves every single day.
E.Having a well-written plan can really benefit the tasks you have set for the day.
F.Simply lying down and focusing on your breath and body is a significant stress reliever.
G.Be honest with yourself in setting the right amount of time to achieve each individual goal.
高三英语七选五困难题查看答案及解析
Most people know that listening to music when they are feeling down or depressed can encourage their spirits.
However studies have also shown that music, especially certain tones can reduce stress. Music can change brainwave patterns, deepen breathing, and bring on a totally stress-free and more open mindset(心态). Using music to relax when considering a particular problem may not only raise your mood, but also could help you reach that "a-ha"moment and find a solution.
Music has also been shown not only to make you feel good, but also, to be a great motivator. For example, during exercise, listening to music can keep you going, or get you to exercise more by helping you to ignore negative feelings of tiredness and focus on the pleasurable feelings you get from being absorbed in the music.
Music is mainly used to record emotion. When we listen to a piece of music we share the artist's feelings on a visceral(本来的)level. That can be sad, and who among us hasn't put on a painful love song to share in the misery after a bad break-up? On the contrary, we can share in the delight of songs of joy and happiness, or any song or piece of music that reminds us of a particular happy time in our past.
So next time you are feeling down, put on Beethoven' s Ode to Joy, I bet you will feel a lot better about whatever it was that was bothering you!
1.We can infer from the first paragraph that music can .
A. benefit you in many ways
B. promote you to find more questions
C. change the patterns of your lifestyle
D. influence your attention to a problem
2.The author wrote the second paragraph mainly to .
A. tell us a story B. make some comments
C. give us an example D. list some facts
3.When we enjoy a piece of sad music, .
A. we'll share the artist's feelings deeply
B. we may recall our miserable past
C. we may be reminded of particular joy
D. we'll show mercy on the artist' s life
4.What's the best title of the text?
A. What music means to a music lover B. Why people love happy music
C. What kind of music is popular D. How music changes your life
高三英语阅读理解中等难度题查看答案及解析
Most people are aware that outdoor air pollution can damage their health,but many do not know that indoor air pollution can also have significant health effects.Environmental Protection Agency studies indicate that indoor levels of pollutants may be 3~5 times,and occasionally more than 100 times,higher than outdoor levels.These levels of indoor air pollutants may be of particular concern because most people spend about 90% of their time indoors.
There are many sources of indoor air pollution in any home.These include sources such as oil,gas,coal,wood,and tobacco products,building materials,wet or damp carpet,and furniture made of certain pressed wood products,products for household cleaning and maintenance,personal care,or hobbies,central heating and cooling systems.
Immediate effects may show up after a single exposure (暴露) or repeated exposures.These include irritation of the eyes,nose,and throat,headaches,dizziness.Such immediate effects are usually shortterm and treatable.Sometimes the treatment is simply removing the person’s exposure to the source of the pollution,if it can be identified.
The likelihood of immediate reactions to indoor air pollutants depends on several factors.Age and preexisting medical conditions are two important influences.In other cases,whether a person reacts to a pollutant depends on individual sensitivity,which varies tremendously from person to person.Some people can become sensitized to biological pollutants after repeated exposures,and it appears that some people can become sensitized to chemical pollutants as well.
Certain immediate effects are similar to those from colds or other viral (病毒性的) diseases,so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution.While pollutants commonly found in indoor air are responsible for many harmful effects,there is considerable uncertainty about what concentrations or periods of exposure are necessary to produce specific health problems.People also react very differently to exposure to indoor air pollutants.Therefore,further research is needed to better understand the effects of indoor air pollution and to find efficient ways to protect our health.
1.According to the first paragraph,which of the following is NOT true?
A.People often fail to notice indoor air pollution.
B.Indoor air pollution sometimes is more dangerous than outdoor air pollution.
C.Outdoor air pollution may not be so serious as indoor air pollution.
D.It is obvious that people have been paying more attention to indoor air pollution.
2.According to the author,which may NOT be the source of indoor air pollution?
A.Building materials. B.Wet carpet.
C.Cooling system. D.Refrigerators.
3. What does the underlined word “irritation” in the third paragraph probably mean?
A.Bad intention. B.Much sensitivity.
C.Injury. D.Carelessness.
4. Which of the following might be the best title for the passage?
A.Reactions of Pollution B.Danger from Home
C.Pollution Resources D.Different Pollutions
高三英语阅读理解中等难度题查看答案及解析
Most people think their time problems are outer, and that they are caused by the telephone, meetings, visitors, and delayed information or decisions. Although these problems often have a bad effete on them, as when people call or drop in, we usually contribute to them. We fail to have calls screened by a skillful secretary or assistant, or we leave our door open, actually assuring constant interruptions.
In almost all cases, it is possible to influence, if not control, it usually can cause problems, such as, slowness and indecision, lack of self-discipline, the inability to delegate, or the tendency to fight fires, to act without thinking, and to jump from task to task without finishing any of them.
Time is constant that cannot be changed. The clock cannot be slowed down or speeded up. Thus we cannot manage time itself. We can only manage our activities with respect to time.
The same skills are needed as those used in managing others—the abilities to plan, organize, delegate, direct, and control. Time management is simply self-management. It is impossible to be effective in any position without controlling one’s time effectively.
Successful time management does not mean working harder, but working smarter. All kinds of management skills must be used in the home and office to get most value from time. You must think ahead about what to do, and timely than others, making it get maximum results in the shortest possible period.
1.According to the writer, time problems .
A.are caused by the telephone, meetings and visitors |
B.are caused by delayed information or decisions |
C.can be solved by self-management |
D.can’t be controlled |
2.Which of the following is NOT mentioned as tile internally generated time wasters?
A.slowness and indecision. |
B.Lack of self-discipline. |
C.Jumping from task to task without finishing any of them. |
D.Working hard. |
3.It can be concluded from the passage that the abilities to plan, organize, delegate, direct and control should .
A.be used in managing others’ activities |
B.be used in managing one’s own activities |
C.not be used in time management |
D.be used in managing both others’ and one’s activities |
4.We can also draw a conclusion that the key to successful time management is .
A.working harder and harder |
B.clever self-management |
C.thinking of what to do, and how and when to do it |
D.employing a skillful secretary |
高三英语阅读理解中等难度题查看答案及解析
Most people think their time problems are outer, and that they are caused by the telephone, meetings, visitors, and delayed information or decisions. Although these problems often have a bad effect on us, as when people call or drop in, we usually contribute to them. We fail to have calls screened(审查)by a skillful secretary or assistant, or we leave our door open, actually assuring constant interruptions.
In almost all cases, it is possible to influence our time. If not controlled, it usually can cause problems, such as, slowness and indecision, lack of self-discipline, the inability to delegate(委托), or the tendency to act without thinking and to jump from task to task without finishing any of them.
Time is constant that cannot be changed. The clock cannot be slowed down or sped up. Thus we cannot manage time itself. We can only manage our activities with respect to time.
The same skills are needed as those used in managing others-the abilities to plan, organize, delegate, direct, and control. Time management is simply self-management. It is impossible to be effective in any position without controlling one’s time effectively.
Successful time management does not mean working harder, but working smarter. All kinds of management skills must be used in the home and office to get most value from time. You must think ahead about what to do, and more timely than others, making it get maximum results in the shortest possible period.
1.What does “outer” in the first sentence mean?
A.being away from a center
B.situated outside
C.objective
D.relating to a person’s body or physical appearance rather than to a person’s mind or spirit
2.Which of the following is NOT mentioned as internally generated time wasters?
A.Slowness and indecision.
B.Lack of self-discipline.
C.Jumping from task to task without finishing any of them.
D.Working hard.
3.It can be concluded from the passage that the abilities to plan, organize, delegate, direct and control should ________.
A.be used in managing others’ activities
B.be used in managing one’s own activities
C.not be used in time management
D.be used in managing both other’s and one’ activities
4.We can also draw a conclusion that the key to successful time management is ________.
A.working harder and harder
B.clever self-management
C.thinking of what to do, and how and when to do it
D.employing a skillful secretary
高三英语阅读理解中等难度题查看答案及解析