Keeping a busy social life among lots of friends may keep people thinner than spending several hours in a gym, according to scientists. Scientists believe social activities can release a brain chemical that changes white fat into brown fat. Brown fat burns calories (卡路里). To produce heat, while white fat keeps calories and make us fatter.
Changing white fat into brown fat is very difficult, generally requiring long-term exposure to cold conditions or making part of the body’s nervous (神经的) system active. However, scientists from Ohio State University think that having a busy social life is an even better way of carrying out this change.
Tests on mice showed that those lived in large communities and had more space and toys lost half of their stomach weight in four weeks, even if they ate more than those in boring, lonely environments. Researchers said that social excitement helps lose weight.
However, social activities make some people worried. Study writer Dr Matthew During said, “I’m still amazed at the degree of losing fat that happens. We often think of stress (压力) as a negative thing, but some kinds of stress can be good for your health.”
Explaining how new technology had reduced the chance for people to communicate face to face, he added, “It’s not just because of being short of exercise and high calorie foods, but an increasing lack of social activities. Loneliness is a deep cause of cancer and death, it’s just as dangerous as smoking. Social activities are very important.
根据短文内容选择最佳答案。
1.The underlined word “exposure” means________in Chinese.
A.勘探 B.适应 C.暴露
2.When people take social activities, a brain chemical can change white fat into________.
A.brown fat B.calories C.energy
3.According to the tests on mice, ________.
A.Taking more social activities will work for losing weight, even if you eat more.
B.Mice living in boring and lonely environments will gain weight although they eat less.
C.The results from test on mice aren’t fit for humans.
4.Which of the following is TRUE according to the passage?
A.Brown fat keeps calories and make people fatter while white fat burns calories to produce heat.
B.To change white fat into brown fat, long-term exposure to cold conditions is required.
C.Unlike smoking, loneliness can cause cancer and even death.
5.The best title for the passage can be ________.
A.Social Activities Help Lose Weight
B.Brown Fat and White Fat
C.Loneliness Is Dangerous
九年级英语阅读单选中等难度题
Keeping a busy social life among lots of friends may keep people thinner than spending several hours in a gym, according to scientists. Scientists believe social activities can release a brain chemical that changes white fat into brown fat. Brown fat burns calories (卡路里). To produce heat, while white fat keeps calories and make us fatter.
Changing white fat into brown fat is very difficult, generally requiring long-term exposure to cold conditions or making part of the body’s nervous (神经的) system active. However, scientists from Ohio State University think that having a busy social life is an even better way of carrying out this change.
Tests on mice showed that those lived in large communities and had more space and toys lost half of their stomach weight in four weeks, even if they ate more than those in boring, lonely environments. Researchers said that social excitement helps lose weight.
However, social activities make some people worried. Study writer Dr Matthew During said, “I’m still amazed at the degree of losing fat that happens. We often think of stress (压力) as a negative thing, but some kinds of stress can be good for your health.”
Explaining how new technology had reduced the chance for people to communicate face to face, he added, “It’s not just because of being short of exercise and high calorie foods, but an increasing lack of social activities. Loneliness is a deep cause of cancer and death, it’s just as dangerous as smoking. Social activities are very important.
根据短文内容选择最佳答案。
1.The underlined word “exposure” means________in Chinese.
A.勘探 B.适应 C.暴露
2.When people take social activities, a brain chemical can change white fat into________.
A.brown fat B.calories C.energy
3.According to the tests on mice, ________.
A.Taking more social activities will work for losing weight, even if you eat more.
B.Mice living in boring and lonely environments will gain weight although they eat less.
C.The results from test on mice aren’t fit for humans.
4.Which of the following is TRUE according to the passage?
A.Brown fat keeps calories and make people fatter while white fat burns calories to produce heat.
B.To change white fat into brown fat, long-term exposure to cold conditions is required.
C.Unlike smoking, loneliness can cause cancer and even death.
5.The best title for the passage can be ________.
A.Social Activities Help Lose Weight
B.Brown Fat and White Fat
C.Loneliness Is Dangerous
九年级英语阅读单选中等难度题查看答案及解析
—I don’t think keeping pet dogs is a good idea. Dogs create a lot of trouble.
— . In my opinion, it can help you become a person full of love.
A. You are right B. Not really C. That’s a good idea D. Believe or not
九年级英语单项填空中等难度题查看答案及解析
__________ my opinion, keeping a pet dog will probably cause a lot of trouble. .
A.To B.In C.For D.With
九年级英语单选题中等难度题查看答案及解析
– I think keeping pet dogs isn’t a good idea. Dogs create a lot of mess.
–_______________. In my opinion, it can help you become a more responsible person.
A. I think so, too
B. So do I
C. That’s a good idea
D. I don’t agree with you
九年级英语单选题中等难度题查看答案及解析
– I think keeping pet dogs isn’t a good idea. Dogs create a lot of mess.
–_______________. In my opinion, it can help you become a more responsible person.
A. I think so, too
B. So do I
C. That’s a good idea
D. I don’t agree with you
九年级英语单项填空中等难度题查看答案及解析
Social Bond of Animals
Friendship is an important part of human life. Friends can share our joys and our hardships. We aren’t alone. Many different animals also make friends.
Recently , a British research team finished an eight-year study of Indo-Pacific dolphins off the coast of Western Australia. These dolphins can use different tools to search for food. The researchers found that these dolphins are more willing to hang out with partners that like the same tool. Other factors, like family closeness or sex, have no influence on this relationship.
“It suggests that dolphins form social bonds （纽带）based on shared interests,w UK biologist Simon Allen told Science Daily. "Using different tools is time-consuming （耗时间的）” for dolphins to cooperate.
Apart from dolphins, elephants, horses and bats are also known to form friendships. Are friendships only limited to the same species? Of course not, The
Atlantic reported in 2015, a goat Timur was originally left in the tiger Amur's enclosure （围场）as a meal. But instead of eating Timur, Amur likes to play with it and gets jealous when others are close to his friend.
The Atlantic said it’s not unusual among captive （圈禁的）animals. That's because in captivity, animals don’t need to spend much time and energy marking their territory （领地）or looking for mates the way they would in the wild. They are actually more likely to feel bored. " In this particular situation, the animal's motivation to engage （参与）socially and playfully may be higher than eating. n
More interestingly, animals not only make friends but also try to keep lasting friendships. Take bats for example. In 2011, scientists found bats prefer to hang out with a few certain friends, keeping loose ties to the rest of their group.
Humans aren't so different. “We do not work, play and live together with the same friends all the time，" Swiss zoologist Gerald Kerth explained. “ But nevertheless, we are able to maintain long-term relationships …despite our often highly dynamic （动态的）social lives."
1.What did the recent British research find about dolphins?
A.They form a group to look for food together.
B.They form friendships based on family closeness.
C.They are likely to make friends based on interests.
D.They are better at building friendships than other animals.
2.What can we infer from Gerald Kerth’s words?
A.Animals like to hang out with different friends.
B.Animals might feel bored with friends of the same species.
C.Humans are better at keeping long-term bonds than animals.
D.Humans and animals make and keep friendships in similar ways.
3.What's the passage mainly about?
A.How animals form and keep friendship.
B.The importance of friendship for animals.
C.How to build strong ties with your friends.
D.The different ways humans and animals socialize.
九年级英语阅读单选困难题查看答案及解析
—Join our educational exchange now. You can improve your social skills _____ make lots of friends.
—It sounds great. I’d love to.
A. and B. but C. except
九年级英语单项填空中等难度题查看答案及解析
Jane is very busy these days, for she has a lot of problems to .
A. deal with B. keep up with
C. agree with D. come up with
九年级英语单项填空简单题查看答案及解析
（河南省2015年中考英语试题）Jane is very busy these days, for she has a lot of problems to .
A. deal with B. keep up with
C. agree with D. come up with
九年级英语单选题简单题查看答案及解析
Expressions cover all parts of our life. They may be around your ears every day. You may know a lot of Chinese expressions that describe how you feel. Here are some English ones for your enjoyment.
Have Your Heart in Your Mouth
This expression means that you're really afraid or anxious about something. When your heart starts beating so much that you can feel a thumping(怦怦跳) in your throat, it may feel like you "have your heart in your mouth."
Have Butterflies in the Stomach
How did butterflies get in your stomach? Well, those really aren't butterflies in there. It is a way of describing those nervous feelings you might get before a test or a very important decision.
These stomach flutters (跳动) are normal and happen to many people. Some people believe having a few butterflies might even help you perform better.
Sick as a Dog
If you've ever been very sick, you may have used this expression. Because dogs eat just about anything they find, they often get sick. So it's all right to describe someone who's not feeling well as being "sick as a dog".
Under the Weather
When it's rainy all day outside, how would you feel? This expression comes from the idea that bad weather might hurt a person's health and mood(心情).
1. The expression "__" is most probably used while you are watching a thriller.
A. have your heart in your mouth B. sick as a dog C. under the weather
2.Someone believes__ if you "have butterflies in the stomach" before a test.
A. you're sure to fail B. you will forget everything C. you might do better
3.It's __ to say somebody is "sick as a dog" when he is not feeling well.
A. impolite B. suitable C. wrong
4.When somebody says "under the weather", he must feel________
A. upset B. happy C. calm
5.All expressions discussed in this passage are about________
A. health B. habits C. feelings
九年级英语阅读理解简单题查看答案及解析