If you ____ the bottle and cigarettes, you’ll be much healthier.
A. keep up B. keep on C. keep to D. keep off
高三英语单项填空困难题
If you ____ the bottle and cigarettes, you’ll be much healthier.
A. keep up B. keep on C. keep to D. keep off
高三英语单项填空困难题查看答案及解析
If you have health examinations______, any disease you may have can be discovered early and successful treatment is more likely,
A. approximately B. regularly C. gradually D. roughly
高三英语单项填空中等难度题查看答案及解析
If your job requires a lot of sitting, you could be putting your health at danger.
The American Journal of Epidemiology (流行病学) did a study in 2010 on the correlation (相互联系) between sitting and an individual's physical health. In the study, 53,440 working men and 69,776 working women were surveyed on their time spent sitting. The subjects were all disease free when employed. The researchers identified 11,307 deaths in men and 7,923 deaths in women during the 14-year follow-up.
The findings: Women who reported sitting for more than six hours per day had an approximately 40 higher all-cause death rate than those who reported less than three hours a day, and men had an approximately 20 higher death rate.
Well, now's a fine time to get this information. But why didn't they tell me this years ago? I would have planned on taking a more active job instead of the sedentary (坐着的) job of an editor.
So what can you do if you have to work for a living at a job that requires a lot of sitting? Here are some ideas:
Take frequent breaks. It is recommended that workers vary activities, change their position, and take short breaks every 20 minutes to rest muscles and increase blood circulation. Get a standing desk. Some studies have shown that working from an upright position may be better for health. The serious fitness people can even purchase a treadmill (跑步机) desk. It only goes about one mile per hour. Have a walking meeting. If your group is kind of small, going for a walk while discussing topics is a good alternative.
1.According to the text, the study in 2010 ______.
A. found men reporting shorter sitting time than women
B. surveyed more men than women on their daily sitting time
C. identified fewer deaths in men than in women during the 14-year follow-up
D. discovered correlation between sitting and physical health in men and in women
2.We can infer from the text that the author did not recommend ______.
A. using a standing desk B. resting one's muscles
C. quitting sedentary jobs D. taking a walk while discussing
3.What does the underlined word "subjects" in Paragraph 2 mean?
A. Things being discussed. B. People being studied.
C. Areas of knowledge being learned. D. Objects being painted.
4.What is the main idea of the text?
A. Your job could be killing you.
B. Working out leads to health risks.
C. Long-time sitting is positively associated with health.
D. A study on sitting time and physical health was completed.
高三英语阅读理解中等难度题查看答案及解析
If you want to improve your figure and health, the most effective thing to do is to show up at the gym every time you ________ be there.
A. can B. will
C. may D. shall
高三英语单项填空中等难度题查看答案及解析
---The weather has been very hot and dry.
---Yes. If it had rained even a drop, things would be much better now! And my vegetables ______.
| A．wouldn't die | B．didn't die | C．hadn't died | D．wouldn't have died |
高三英语单项填空困难题查看答案及解析
If it had rained even a drop, things would be much better now and the crops in the fields ________．
A．wouldn’t die B．didn’t die
C．hadn’t died D．wouldn’t have died
高三英语单项填空中等难度题查看答案及解析
Do you remember the last time you spoke to your mother and expressed how much you love her? If you do, when? I am ______ if it was only me but we that tend to have the habit of avoiding ______ how important our parents are to us.
I am not ______ to expressing how much I love my parents. It is not because I am ______ about tilling it, but because I don’t feel like saying it.
But that ______ the moment I learned that my mother had been ______ with stage 3 breast cancer in November 2016. We followed all her ______ advice. For two years, she continued to fight against the big C, going through the ______ of chemotherapy（化疗）and all.
People around did everything they could to help her—______ and mentally. Her co-church goers, uplifting her spiritually whenever she felt like ______, became more than a family to us. All through her journey, I’ve ______ how these people became a part of her. I couldn’t be too______ for their generosity.
However, after nearly two years of ______, that day finally arrived on March 25, 2018.
It wasn’t easy to ______. It wasn’t easy not to ______ what she had done for me and my siblings. I know it isn’t too late to ______ all the things a mother had done to their children. However, only when they aren’t around us can you notice it ______.
This is one of the things we tend to ______—to appreciate whatever our parents do to us. I know it isn’t late for those whose ______ are still around them. Let them know how much you appreciate all their ______. All they have done in your life is just to make sure you are in good condition.
1.A.unsure B.certain C.aware D.skeptical
2.A.pretending B.admitting C.expressing D.approving
3.A.devoted B.delighted C.ashamed D.accustomed
4.A.awkward B.shy C.annoyed D.indifferent
5.A.changed B.stopped C.continued D.disappeared
6.A.diagnosed B.sentenced C.faced D.concerned
7.A.friends’ B.physicians’ C.neighbors’ D.family’s
8.A.danger B.sorrow C.process D.trial
9.A.officially B.practically C.occasionally D.financially
10.A.holding on B.picking up C.taking off D.giving up
11.A.suspected B.experienced C.witnessed D.wondered
12.A.careful B.regretful C.grateful D.thoughtful
13.A.appreciating B.battling C.observing D.challenging
14.A.understand B.admit C.forget D.accept
15.A.notice B.hear C.say D.know
16.A.admire B.appreciate C.enjoy D.value
17.A.more B.often C.seldom D.less
18.A.forgive B.treasure C.remember D.forget
19.A.children B.parents C.colleagues D.siblings
20.A.preference B.expense C.efforts D.achievements
高三英语完形填空中等难度题查看答案及解析
— The weather has been very hot and dry.
—Yes. If it had rained even a drop, things would be much better now! And my vegetables________.
A. wouldn’t die B. didn’t die C. hadn’t died D. wouldn’t have died
高三英语单项填空中等难度题查看答案及解析
If you see a person carelessly throw a cigarette to the ground, what are you likely to think?
If you hate people throwing things on the ground, you might think, “That person shouldn’t litter.” If you are a smoker, you might think, “I would sure like a cigarette right now.”
Most likely, though, you are not thinking, “That unused cigarette butt could be used to make something amazing!”
That is, unless you are a creative scientist. If you are, you may see potential—a possibility—where others simply see trash（垃圾）. That is just what has happened in South Korea.
The spirit of invention can hit at the strangest times and in the most unusual places. In South Korea, it happened near a trash can.
Kin Gil-Pyo is with the Seoul National University. He says he saw people throwing away cigarette butts, which got him thinking. He began wondering if something useful could be made from them.
He and other researchers found a way to convert cigarette butts into materials required for high-performance batteries.
Kim Gil-Pyo says they looked closely at used cigarette filters（滤嘴）, the parts of cigarettes smokers put into their mouths. Filters are made of a material called “cellulose acetate（醋酸纤维素）.”
Mr. Kim explains that cellulose acetate can be made into another material: carbon. The pieces of cellulose acetate, known as fibers, are changed through a one-step burning process. After this, they are turned into an energy storage material.
But why use carbon? Carbon has many qualities that seem to make it the perfect material. Carbon has a high surface area. It conducts electricity well. It also stays stable, unlikely to change, for a long time. And carbon does not cost a lot. All these qualities make it the most popular material for making super-capacitors（超级电容器）.
Super-capacitors are good at storing energy. They have high-power mass, or density(密度). They require only a short time for recharging. And they have a long lifecycle. Super-capacitors are used in products such as laptop computers and cell phones. They are also used in industrial energy converters, like wind turbine machines.
Combining carbon and super-capacitors seems like a perfect marriage.
Kim Gil-Pyo tells the Reuters News Agency that cigarette butts could affect the economy is a huge way. They could prove to be a low-cost source of carbon material. They are so cheap that smokers throw them to the ground. And you don’t get much cheaper than that.
1.What may people think seeing a person throw a cigarette to the ground?
A.That all depends. B.He should be blamed.
C.It causes them to smoke. D.The butts can be reused.
2.Filters can be made into a material that .
A.is used as the battery surface
B.can be turned into electricity
C.is very easy and costs nothing
D.can hold electricity energy well
3.Super-capacitors made from carbon .
A.need quite a long time to recharge
B.are comparatively very expensive
C.can easily carry an electrical current
D.can save a large quantity of electricity
4.The story tells the readers the truth that .
A.where there is a will, there is a way
B.the most useless is usually the most useful
C.ideas usually hit at the most unusual places
D.one person’s trash is another person’s treasure
高三英语阅读理解中等难度题查看答案及解析
Babies’ health is much more likely to be affected if______ parent smokes．
A. both B. none C. neither D. either
高三英语单项填空中等难度题查看答案及解析