.
That little “a” with a circle curling around it that is found in E – mail addresses is most commonly referred to as the “at” symbol.
Surprisingly though, there is no official, universal name for this sign. There are dozens of strange terms to describe the "@" symbol.
Before it became the standard symbol for electronic mail, the "@" symbol was used to represent the cost of something or how heavy something is. For instance, if you purchased 6 apples, you might write it as 6 apples "@" $1.10 each.
With the introduction of e-mail came the popularity of the "@" symbol. The "@" symbol or the "at sign" separates a person's online user name from his mail server(服务器) address. For instance, joe@uselessknowledge.com. Its widespread use on the Internet made it necessary to put this symbol on keyboards in other countries that have never seen or used the symbol before. As a result, there is really no official name for this symbol.
The actual origin of the symbol remains a mystery. History tells us that the @ symbol came from the tired hands of the Middle Ages. During the Middle Ages before the invention of printing machines, every letter of a word had to be copied with great efforts by hand for each copy of a published book. The monks that performed these long, boring coping duties looked for ways to reduce the number of individual strokes (笔画) per word for common words. Although the word “at” is quite short to begin with, it was a common enough word in text and documents so that those monks thought it would be quicker and easier to shorten the word “at” even more. As a result, the monks changed the shape of “t” into a circle to surround “a”, thus leaving out two strokes in the spelling “t”.
58.Which of the following is the best title of the passage?
A.How “at” developed into @. B.How @ came into being.
C.How monks invented @. D.How people wrote the cost of something.
59.Which is NOT the reason for the monks to spell “at” as @?
A.Though “at” is short, it was used very often.
B.The monks wanted to be quicker and easier with their copying.
C.The monks wanted to invent a new word.
D.Copying work was long and boring for them.
60.According to paragraph 5, which is TRUE about the symbol of @ today?
A.When you are online, you must use the @ symbol.
B.Kittly 163.com@is an email address.
C.In countries where @ is used, governments have given it an official name.
D.It is likely to find the @ symbol on computer keyboards worldwide.
高三英语阅读理解简单题
.
That little “a” with a circle curling around it that is found in E – mail addresses is most commonly referred to as the “at” symbol.
Surprisingly though, there is no official, universal name for this sign. There are dozens of strange terms to describe the "@" symbol.
Before it became the standard symbol for electronic mail, the "@" symbol was used to represent the cost of something or how heavy something is. For instance, if you purchased 6 apples, you might write it as 6 apples "@" $1.10 each.
With the introduction of e-mail came the popularity of the "@" symbol. The "@" symbol or the "at sign" separates a person's online user name from his mail server(服务器) address. For instance, joe@uselessknowledge.com. Its widespread use on the Internet made it necessary to put this symbol on keyboards in other countries that have never seen or used the symbol before. As a result, there is really no official name for this symbol.
The actual origin of the symbol remains a mystery. History tells us that the @ symbol came from the tired hands of the Middle Ages. During the Middle Ages before the invention of printing machines, every letter of a word had to be copied with great efforts by hand for each copy of a published book. The monks that performed these long, boring coping duties looked for ways to reduce the number of individual strokes (笔画) per word for common words. Although the word “at” is quite short to begin with, it was a common enough word in text and documents so that those monks thought it would be quicker and easier to shorten the word “at” even more. As a result, the monks changed the shape of “t” into a circle to surround “a”, thus leaving out two strokes in the spelling “t”.
58.Which of the following is the best title of the passage?
A.How “at” developed into @. B.How @ came into being.
C.How monks invented @. D.How people wrote the cost of something.
59.Which is NOT the reason for the monks to spell “at” as @?
A.Though “at” is short, it was used very often.
B.The monks wanted to be quicker and easier with their copying.
C.The monks wanted to invent a new word.
D.Copying work was long and boring for them.
60.According to paragraph 5, which is TRUE about the symbol of @ today?
A.When you are online, you must use the @ symbol.
B.Kittly 163.com@is an email address.
C.In countries where @ is used, governments have given it an official name.
D.It is likely to find the @ symbol on computer keyboards worldwide.
高三英语阅读理解简单题查看答案及解析
With around 100 students scheduled to be in that 9 am Monday morning lecture, it is no surprise that almost 20 people actually make it to the class and only 10 of them are still awake after the first 15 minutes; it is not even a surprise that most of them are still in their pyjamas(睡衣). Obviously, students are terrible at adjusting their sleep cycles to their daily schedule.
All human beings possess a body clock. Along with other alerting(警报)systems, this governs the sleep/wake cycle and is therefore one of the main processes which govern sleep behaviour. Typically, the preferred sleep/wake cycle is delayed in adolescents, which leads to many students not feeling sleepy until much later in the evenings. This typical sleep pattern is usually referred to as the“night owl”schedule of sleep.
This is opposed to the“early bird”schedule, and is a kind of disorder where the individual tends to stay up much past midnight. Such a person has great difficulty in waking up in the mornings. Research suggests that night owls feel most alert and function best in the evenings and at night. Research findings have shown that about 20 percent of people can be classified as“night owls”and only 10 percent can be classified as“early birds”—the other 70 percent are in the middle. Although this is clearly not true for all students, for the ones who are true night owls this gives them an excellent excuse for missing their lectures which unfortunately fall before midday.
1. What does the author stress in Paragraph 1?
A. Many students are absent from class.
B. Students are very tired on Monday mornings.
C. Students do not adjust their sleep patterns well.
D. Students are not well prepared for class on Mondays.
2.Which of the following is true according to Paragraph 2?
A. Most students prefer to get up late in the morning.
B. Students don’t sleep well because of alerting systems.
C. One’s body clock governs the sleep/wake cycle independently.
D. Adolescents’delayed sleep/wake cycle isn’t the preferred pattern.
3.Which of the following is closest in meaning to the underlined word “classified”?
A. Criticised. B. Grouped. C. Organised. D. Named.
4.What does the text mainly talk about?
A. Functions of the body clock.
B. The “night owl” phenomenon.
C. Human beings’ sleep behaviour.
D. The school schedule of “early birds”.
高三英语阅读理解中等难度题查看答案及解析
With around 100 students scheduled to be in that 9:00 am Monday morning lecture, it is no surprise that almost 20 people actually make it to the class and only 10 of them are still awake after the first 15 minutes; it is not even a surprise that most of them are still in their pajama’s(睡衣). Obviously, students are terrible at adjusting their sleep cycles to their daily schedule.
All human beings possess a body clock. Along with other alerting systems, this governs the sleep/wake cycle and is therefore one of the main processes which govern sleep behaviour. Typically, the preferred sleep/wake cycle is delayed in adolescents, which leads to many students not feeling sleepy until much later in the evenings. This typical sleep pattern is usually referred to as the “night owl” schedule of sleep.
This is opposed to the “early bird” schedule, and is a kind of disorder where the individual tends to stay up much past midnight. Such a person has great difficulty in waking up in the mornings. Research suggests that night owls feel most alert and function best in the evenings and at night. Research findings have shown that about 20 percent of people can be classified as “night owls” and only 10 percent can be classified as “early birds” ------ the other 70 percent are in the middle. Although this is clearly not true for all students, for the ones who are true night owls, this gives them an excellent excuse for missing their lectures which unfortunately fall before midday.
1.What does the author stress in Paragraph 1 ?
A. Many students are absent from class.
B. Students are very tired on Monday mornings.
C. Students do not adjust their sleep patterns well.
D. Students are not well prepared for class on Mondays.
2.Which of the following is true according to Paragraph 2?
A . Most students prefer to get up late in the morning.
B. Students don’t sleep well because of alerting systems.
C .One’s body clock governs the sleep/wake cycle independently.
D. Adolescents’ delayed sleep/wake cycle isn’t the preferred pattern.
3.Which of the following is closest in meaning to the underlined word “classified”?
A. Criticized B. Grouped
C. Organized D. Named
4.What does the text mainly talk about?
A. Functions of the body clock.
B. The “night owl” phenomenon.
C. Human beings’ sleep behaviour.
D. The school schedule of “early birds”.
高三英语阅读理解中等难度题查看答案及解析
With around 100 students scheduled to be in that 9:00 am Monday morning lecture, it is no surprise that almost 20 people actually make it to the class and only 10 of them are still awake after the first 15 minutes; it is not even a surprise that most of them are still in their pajama’s(睡衣). Obviously, students are terrible at adjusting their sleep cycles to their daily schedule.
All human beings possess a body clock. Along with other alerting systems, this governs the sleep/wake cycle and is therefore one of the main processes which govern sleep behaviour. Typically, the preferred sleep/wake cycle is delayed in adolescents, which leads to many students not feeling sleepy until much later in the evenings. This typical sleep pattern is usually referred to as the “night owl” schedule of sleep.
This is opposed to the “early bird” schedule, and is a kind of disorder where the individual tends to stay up much past midnight. Such a person has great difficulty in waking up in the mornings. Research suggests that night owls feel most alert and function best in the evenings and at night. Research findings have shown that about 20 percent of people can be classified as “night owls” and only 10 percent can be classified as “early birds” ------ the other 70 percent are in the middle. Although this is clearly not true for all students, for the ones who are true night owls, this gives them an excellent excuse for missing their lectures which unfortunately fall before midday.
1.What does the author stress in Paragraph 1?
A. Many students are absent from class.
B. Students are very tired on Monday mornings.
C. Students do not adjust their sleep patterns well.
D. Students are not well prepared for class on Mondays.
2.Which of the following is true according to Paragraph 2?
A. Most students prefer to get up late in the morning.
B. Students don’t sleep well because of alerting systems.
C. One’s body clock governs the sleep/wake cycle independently.
D. Adolescents’ delayed sleep/wake cycle isn’t the preferred pattern.
3.Which of the following is closest in meaning to the underlined word “classified”?
A. Criticized B. Grouped C. Organized D. Named
4.What does the text mainly talk about?
A. Functions of the body clock.
B. The “night owl” phenomenon.
C. Human beings’ sleep behaviour.
D. The school schedule of “early birds”.
高三英语阅读理解中等难度题查看答案及解析
It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil) creating a greenhouse effect-holding in heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.
Another view, less widely held, is that increasing particulate matter in the atmosphere is blocking sunlight and lowering the earth’s temperature-a result that would be equally disastrous(灾难的). A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. At present we do riot know for sure that either of these conditions will happen(though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we very lucky, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now.
1.As pointed out at the beginning of the passage, people used to think that air pollution ______.
A.caused widespread damage in the countryside
B.affected the entire eastern half of the United States
C.almost brought worldwide effect
D.existed merely in urban and industrial areas
2.As far as the greenhouse effect is concerned, the author _____________.
A.shares the same view with the scientists
B.is uncertain of its occurrence
C.rejects it as being ungrounded(无根据的)
D.thinks that it will increasingly destroy the world soon
3.It can be inferred from the passage that________.
A.raising the world’s temperature a little would not do much harm to life on the earth
B.lowering the world’s temperature a little would lead to agricultural disasters
C.almost no temperature variations have occurred over the past decade
D.the world’s temperature will remain stable forever
4.This passage is primarily concerned with________.
A.the greenhouse effect in the world
B.the measures to adjust the climate
C.the potential effect of air pollution
D.the measures to protect the environment
高三英语阅读理解简单题查看答案及解析
It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil) creating a greenhouse effect-holding in heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.
Another view, less widely held, is that increasing particulate matter in the atmosphere is blocking sunlight and lowering the earth’s temperature-a result that would be equally disastrous(灾难的). A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. At present we do riot know for sure that either of these conditions will happen(though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we very lucky, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now.
1.As pointed out at the beginning of the passage, people used to think that air pollution ______.
A.caused widespread damage in the countryside
B.affected the entire eastern half of the United States
C.almost brought worldwide effect
D.existed merely in urban and industrial areas
2.As far as the greenhouse effect is concerned, the author _____________.
A.shares the same view with the scientists
B.is uncertain of its occurrence
C.rejects it as being ungrounded(无根据的)
D.thinks that it will increasingly destroy the world soon
3.It can be inferred from the passage that________.
A.raising the world’s temperature a little would not do much harm to life on the earth
B.lowering the world’s temperature a little would lead to agricultural disasters
C.almost no temperature variations have occurred over the past decade
D.the world’s temperature will remain stable forever
4.This passage is primarily concerned with________.
A.the greenhouse effect in the world
B.the measures to adjust the climate
C.the potential effect of air pollution
D.the measures to protect the environment
高三英语阅读理解中等难度题查看答案及解析
It was once thought that air pollution only affected the area immediately around large cities with factories or heavy automobile traffic. Today we know that although these are the areas with the worst air pollution, the problem is actually worldwide. On several occasions over the past ten years, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warning even in rural areas away from any major concentration of big factories or automobile. In fact, the very climate of the entire earth may be affected by air pollution. Some scientist feel that the increasing concentration of carbon dioxide in the air resulting from the burning of coal and oil is creating a "green house" effect--holding in heat reflected from the earth and raising the world's average temperature. If this view is correct and the world's temperature is raised only a few degrees, much of the polar ice will disappear and cities, such as New York, Boston, Miami, and New Orleans will be under water.
Another view, less widely held, is that increasing particulate matter (颗粒物质) in the atmosphere is blocking sunlight and lowering the earth's temperature--a result that would be equally disastrous. A drop of just a few degrees could create something close to new ice age and would make agriculture difficult or impossible in many of our top farming areas. At present we do not know for sure that either of these conditions will happen (though one recent government report prepared by experts in this field concluded that the green house effect is very likely). Perhaps, if we are lucky enough, the two trends will offset each other and the world's temperature will stay about the same as it is now.
1.As far as the green house effect is concerned, the author________.
A. shares the same view with the scientist
B. is not sure that it will happen
C. thinks it impossible because there is no strong evidence
D. thinks it will destroy the world soon
2.According to what we read in the passage, ________.
A. raising the world's temperature only a few degrees would do no harm to life on the earth
B. lowering the world's temperatures only a few degrees would lead many major farming areas to disaster
C. the temperature in the countryside will remain permanent in the years to come
D. the particulate matter in the atmosphere has lowered the world's average temperature
3.The word "offset" in the last sentence means________.
A. strengthen B. worsen C. balance D. support
4.This passage is mainly about________.
A. the pollution caused by human beings B. the green house effect
C. the potential effect of air pollution D. the possibility of a new ice age
高三英语阅读理解中等难度题查看答案及解析
It is the first time that he ______ here and now it is high time that he ______ around.
A. come; should be shown B. has come; was shown
C. came; was shown D. has come; be shown
高三英语单项填空中等难度题查看答案及解析
It is the first time that he ______ here and now it is high time that he ______ around.
A. come; should be shown B. has come; was shown
C. came; was shown D. has come; be shown
高三英语单项填空中等难度题查看答案及解析
The surprising experiment I am about to describe proves that air is all around you and that it proves down upon you. Air pressure is a wonderful force. When you swim underwater, you can feel water push down your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.
The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now foe the experiment!
What you need
·A hard-boiled egg without the shell
·A bottle with a neck slightly smaller than the egg
·A piece of paper
·A match
Metheod
1) Check that the paper will sit firmly on the neck of the bottle.
2) Tear the paper into strips and put the strips into the bottle.
3) Light the paper by dropping a burning match into the bottle.
4) Quickly sit the egg on the neck of the bottle.
Result
Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.
Why it happened
As the paper burns, it needs oxygen and uses up the oxygen (air) in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! The proves that air is all around and that it is pressing down on it.
1.Why is there the need to take care when you are doing the experiment?
A. The bottle could break.
B. You need to light the paper with a match.
C. The egg needs to be shelled.
D. The egg has to be perfectly placed on the neck of the bottle.
2.In the experiment, the burning inside the bottle can___.
A. equalize the air pressure inside and outside
B. make a seal in the neck of the bottle
C. finish up the oxygen inside the bottle
D. produce more oxygen inside the bottle
3.How did the egg put into the bottle?
A. The oxygen inside the bottle sucked the egg in.
B. It became salt without the shell.
C. The neck of the bottle was wide enough.
D. The outside air pressure forced it into the bottle.
4.The experiment is carried cut to prove ______.
A. water pushes on your body when you swim underwater.
B. the earth is surrounded by a layer of air called the atmosphere.
C. the pressure of air around us has a powerful force.
D. the air pressure is not equalized around us.
高三英语阅读理解中等难度题查看答案及解析