—Do you like working as a waiter?—Yes, but I ...

—Do you like working as a waiter?

—Yes, but I get tired ______ standing the whole day．

高三英语单项填空中等难度题查看答案及解析

Running is often tiring and a lot of hard work, but nothing beats the feeling you get after finishing a long workout around the track.

But while it’s long been believed that endorphins (脑内啡)—chemicals in the body that cause happiness — are behind the so-called “runner’s high”, a study suggested that there may be more to this phenomenon than we previously knew.

According to a recent study published by a group of scientists from several German universities, a group of chemicals called endocannabinoids (内源性大麻素) may actually be responsible for this familiar great feeling.

To test this theory, the scientists turned to mice.

Both mice and humans release high levels of endorphins and endocannabinoids after exercise along with many other chemicals. After exercising on running wheel, the mice seemed happy and relaxed and displayed no signs of anxiety.

But after being given a drug to block their endorphins, the mice’s behavior didn’t seem to change. However, when their endocannabinoids were blocked with a different drug, their runner’s change.

“The long-held notion of endorphins being responsible for the runner’s high is false. Endorphins are effective pain relievers, but only when it comes to the pain in your body and muscle high symptoms seemed to fade you feel after taking exercise,” Patrick Lucas Austin wrote on science blog Lifehacker.

Similar studies are yet to be carried out on humans, but it’s already well known that exercise is a highly effective way to get rid of stress or anxiety.

The UK’s National Health Service even prescribes (开药方) exercise to patients who are suffering from depression.

“Being depressed can leave you feeling low in energy, which might put you off being more active. Regular exercise can cheer you up if you have depression, and it’s especially useful for people with mild to moderate (中等的) depression,” it wrote on its website.

It seems like nothing can beat that feeling we get after a good workout, even if we don’t fully understand where it comes from. At least if we’re feeling down, we know that all we have to do is put on our running shoes.

1.What have scientists from German universities recently discovered?

A.The runner’s high can be caused by endocannabinoids.

B.Working out is a highly effective way to treat depression.

C.Endorphins may contribute to one’s high spirits after running.

D.The level of endorphins and endocannabinoids could affect a person’s mood.

2.The scientists gave mice drugs in their experiments with the intention of ________.

A.testing what influences the level of endocannabinoids released

B.identifying what the cause of the runner’s high is

C.observing the specific symptoms of the runner’s high

D.finding what reduces the runner’s high symptoms

3.The underlined word “notion” in Paragraph 7 has the closest meaning to ________.

A.effect B.suggestion C.question D.belief

4.According to the UK’s National Health Service, working out regularly ________.

A.can help ease depression symptoms

B.is the best way to treat depression

C.can help people recover from depression completely

D.can work for those with serious depression effectively

高三英语阅读理解困难题查看答案及解析

Running is often tiring and a lot of hard work, but nothing beats the feeling you get after finishing a long workout around the track.

But while it’s long been believed that endorphins (脑内啡）一chemicals in the body that cause happiness 一 are behind the so-called “runner’s high”，a study suggested that there may be more to this phenomenon than we previously knew.

According to a recent study published by a group of scientists from several German universities, a group of chemicals called endocannabinoids (内源性大麻素）may actually be responsible for this familiar great feeling.

To test this theory, the scientists turned to mice.

Both mice and humans release high levels of endorphins and endocannabinoids after exercise, along with many other chemicals. After exercising on running wheels, the mice seemed happy and relaxed and displayed no signs of anxiety.

But after being given a drug to block their endorphins the change. However, when their endocannabinoids were block with a different drug, their runner’s high symptoms seemed to fade.

“The long-held notion of endorphins being responsible for the runner's high is false. Endorphins are effective pain relievers, but only when it comes to the pain in your body and muscles you feel after working out,” Patrick Lucas Austin wrote on science blog Lifchacker.

Similar studies are yet to be carried out on humans, but it’s already well known that exercise is a highly effective way to get rid of stress or anxiety.

The UK's National Health Service even prescribes (开药方)exercise to patients who are suffering from depression.

“Being depressed can leave you feeling low in energy, which might put you off being more active. Regular exercise can boost your mood if you have depression, and it's especially useful for people with mild to moderate (中等的）depression,” it wrote on its website.

It seems like nothing can beat that feeling we get after a good workout, even if we don t fully understand where it comes from. At least if we’re feeling down, we know that all we have to do is put on our running shoes.

1.What did scientists from German universities recently discover?

A. Working out is a highly effective way to treat depression.

B. The runner's high could be caused by endocannabinoids.

C. Endorphins may contribute to one's high spirits after running.

D. The level of endorphins and endocannabinoids could affect one's mood.

2.The scientists gave mice drugs in their experiment to　　 .

A. find what reduces the runner's high symptoms

B. see the specific symptoms of the runner's high

C. identify what is responsible for the runner's high

D. test what influences the level of endocannabinoids released

3.The underlined word “notion” in Paragraph 7 has the closest meaning to　　　 .

A. effect　　 B. goal

C. question　　 D. belief

4.According to the UK’s National Health Service, regular workouts　　　　 .

A. are the best way to treat depression

B. can help ease depression symptoms

C. only work for those with serious depression

D. can help people completely recover from depression

高三英语阅读理解中等难度题查看答案及解析

Running is often tiring and a lot of hard work, but nothing 　　　 the feeling you get after finishing a long workout around the track.

A. breaks B. blocks

C. bonds D. beats

高三英语单项填空中等难度题查看答案及解析

.——I hear you___in a pub. What’s it like?

——Well, it’s very hard work and I’m always tired, but I don’t mind.

A.are working  B.will work  C.were working  D.will be working

高三英语单项填空中等难度题查看答案及解析

—I hear you ____ in a pub .what’s it like?

—Well ,it’s very hand work and I’m always tired ,　 but I don’t mind.

A.are working　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 B.will work　　 　　　　　　　　　 C.were working 　　　　　　　　　 　　　　　　　　　 D.will be working

高三英语单项填空中等难度题查看答案及解析

—I hear you 　　　　 in a pub. What’s it like?

—Well, it’s very hard work and I’m always tired, but I don’t mind.

A.are working B.will work

C.were working D.will be working

高三英语单项填空中等难度题查看答案及解析

— You look tired.

— Yes. I ___ non-stop until 8 o’clock.

A. had worked         B. work        C. have worked       D. was working

高三英语单项填空中等难度题查看答案及解析

—You seem tired, David.

—Yes. I _____ all day long and can’t wait to go to bed now.

A. am working                                             B. had been working

C. have been working    D. was working

高三英语单项填空中等难度题查看答案及解析

---You look tired after _____ search for the missing boy．

---Yes, I prefer to head for _____ bed as soon as possible．

高三英语单项填空中等难度题查看答案及解析