When ____ to feel unworthy, children often wo...

When ____ to feel unworthy, children often work extra hard to please their parents．

高三英语单项填空中等难度题查看答案及解析

With two sons ______ in Afghanistan, John and Susie Mayes are working extra hard this year to make sure their grandchildren have a great Christmas.

A．to serve          B．serving           C．having served      D．served

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

143. We often hear the old man sighed with feeling “The younger        don't know what hard work it is!”

高三英语单项填空简单题查看答案及解析

Mary often does some translation work to earn extra money, which 　　 half of her income.

A.makes for　　　　　　　　　 B.counts on C.accounts for　　　　　　　　　 　　　　 D.consists in

高三英语单项填空中等难度题查看答案及解析

Mary often does some translation work to earn extra money, which______half of her income.

(潍坊市)

高三英语单项填空简单题查看答案及解析

According to a study ,little children often feel ________near their parents .

高三英语单项填空中等难度题查看答案及解析

C

Old people are easy to feel lonely because their children are busy with their work and have little time to spend with them. Most of them have to be companied by pet dogs. However, it is sometimes impossible for some old people to keep pet dogs because they are too old or ill to take care of pet dogs.

Experts are studying the influence of robotic dogs on old people’s depression（忧郁症）,physical activity, and life satisfaction. Researchers are placing robotic dogs in the homes of lonely old people to see whether they can improve the quality of life for old people. Alan Beck, an expert in human-animal relationship, said, “Old people should be more active, challenged, excited. The problem is how we promote that, especially for those without friends or help. A robotic dog could be a solution.”

In the study, the robot, called AIBO, is placed for six weeks in the houses of some old people who live alone. These old people will keep a diary to note their feelings and activities before and after AIBO. Researchers will collect basic data for six weeks. Then, the researchers will review the data to decide if there are any changes in the life of its owner.

“I talk to him all the time, and he responds to my voice,” says a 70-year-old lady. “When I'm watching TV, he'll stay in my arms until he wants down. He has a mind of his own.”

The AIBOs respond to certain orders. The researchers say they have some advantages over real dogs, especially for old people. Often the elderly are disabled and cannot care for an animal by walking it or playing with it. A robotic dog needn’t any exercise and feeding concerns.

“At the beginning, it was believed that no one would prefer the robotic dog because it was metal and not furry (毛茸茸的) ,”Beck says. “But it’s amazing how quickly we have given up that belief.”

Hopefully, these robotic pets could become a more valuable health helper. They will record their masters’ blood pressure, oxygen levels, or heart rhythms. AIBOs may even one day have games that can help exciting older people’s minds.

1.From the passage we can learn that old people can easily feel lonely because_____.

A. their children don’t like to stay with them

B. they don’t have pet dogs

C. their children are too busy to stay with them

D. they don’t have robotic dogs

2. The underlined word “note” in the third paragraph means “_____”.

A. to give notice　　 B. to pay attention

C. to write down　 D. to talk about

3.The author may believe that the future robotic dogs can_________.

A. help excit old people’s minds

B. take the place of real dogs

C. cure a lot of serious diseases

D. change people’s beliefs

4.Which is the best title for the passage ?

A. Pet Dogs Need Robotic Dogs

B. Old People Need Robotic Dogs

C. All People Need Robotic Dogs

D. Researchers Need Robotic Dogs

高三英语阅读理解中等难度题查看答案及解析