题目内容
Having a cell phone makes people feel safer，since they can call for help ________ an emergency．
- A.in the case of
- B.in case of
- C.on the case for
- D.in a case of
寒假学与练系列答案
Keeping a busy social life among lots of friends may keep people thinner than spending hours doing some exercises, according to scientists. They say that socialising and meeting with friends help increase levels of brown fat in the body which burns calories(卡路里)to produce heat.
Living in an exciting social environment was found to reduce fat in mice's belly by half over four weeks, even if they ate more. US researchers say that social excitement aids weight loss by turning white fat into brown. White fat stores calories and makes us fatter, while brown burns energy to produce heat. Turning white fat into brown is extremely difficult，normally
requiring long- term stay in cold conditions or exciting part of the body's nervous system.
However, scientists from Ohio State University now think that having a busy social life is an even more effective way of changing white fat into brown. The team came up with their theory by studying the effects of various living environments on mice. Those, who lived alongside a greater number of mice, had more space and toys to excite themselves and then lost far more weight over the course of the study than their “couch potato" fellows.
Study author, Dr Matthew During, whose team's findings appear in the journal Cell Metabolism, said, "I'm still amazed at the degree of fat loss that occurs." Explaining how new technology had threatened face-to-face socialising, he added, "It's not just a sedentary(久坐 的)lifestyle and high calorie foods, but an increasing lack of social activities." Co-author Dr Lei Cao said，"Loneliness is a potential factor for cancer and death; it's equal to cigarette smoking to a certain extent. Social activities are very vital.，，
【小题1】What information can we get from the first two paragraphs?
| A．Brown fat stores calories and makes us fatter. |
| B．It doesn't take long to turn white fat into brown. |
| C．Social excitement helps gain more weight. |
| D．Brown fat can burn energy to produce heat. |
| A．Levels of brown fat can be increased by socialising. |
| B．The mice lacking social life lose more weight. |
| C．The research findings haven't been published so far. |
| D．Dr Matthew During wasn't convinced of the result. |
| A．the fat in mice's belly was reduced because of the relaxing environment |
| B．a sedentary lifestyle and high calories foods influence people's social life |
| C．surfing the Internet may influence people's face-to-face communication |
| D．cancer and death are mainly caused for lack of social life |
| A．Brown fat is beneficial to people's health. |
| B．Socialising is unnecessarily important in people's daily life. |
| C．White fat can be changed into brown fat. |
| D．Socialising contributes to people's losing weight. |
Every American family has its own traditions on Thanksgiving Day, and mine is no different. Once the national holiday arrives, my mom rises early to make the meal. She puts a turkey in the oven, chops carrots and bakes pies. I’m sorry to say that the men in the family – my dad, my younger brother and myself – rarely pitch in to help. Our job is to wash the mountain of dirty dishes after the meal is over.
Around 2 pm every Thanksgiving Day, family members seat themselves around the kitchen table. Plates of turkey, vegetables, salad, rolls and pies cover it. At this point, we can hardly keep ourselves from drooling (流口水) all over our fancy clothes, but it’s not yet time to eat.
First, we must bow our heads, close our eyes and say a prayer of thanks aloud to God for giving us everything we have. Under normal circumstances, I would have no problem making a list of things I am thankful for. I grew up in a loving family. My parents, who aren’t wealthy, took out loans to help me pay for university.
But, the funny thing is, every time I sit down for Thanksgiving dinner and try to say a prayer of thanks, my mind usually goes blank. I think it has something to do with my growling (咕咕叫) stomach and all of that food sitting right there under my nose.
Eventually, though, we all finish our short prayers and dig in. To be sure, the day includes other highlights – visiting with family and watching football. But usually around 6 pm we are all ourselves stuffed like turkeys and thankful to have a nice warm bed to sleep in.
【小题1】The purpose of the text is to ________.
| A．tell what the family do for Thanksgiving Day |
| B．tell how the family spends Thanksgiving Day |
| C．introduce foods served on Thanksgiving Day |
| D．introduce the American Thanksgiving Day |
| A．watching a movie | B．making visits |
| C．having a big meal | D．watching football |
| A．He is too thankful to say a word. |
| B．His mind is on the food before him. |
| C．He feels too excited to speak. |
| D．He is shy to speak in public. |
| A．chat with others | B．make a hole |
| C．mix things up | D．start eating |
| A．On Thanksgiving Day, men do nothing but eat. |
| B．The author is a middle school student. |
| C．The author’s family is not rich, but it’s a loving one. |
| D．Thanksgiving Day falls on Thursday of December. |
阅读理解(共15小题；每小题2分，满分30分)
A car needs gas to run and your body also needs food to work for you. Eating the right kind of food is very important. It can help your body grow strong to take care of what you eat.
There are four main food groups altogether. The dairy group has food like milk, cheese and sour milk. The other three groups are the meat and fish group, the fruit and vegetable group, and the bread and rice group. Each meal should have at least one food from all four main groups. With all these food together, you will be given enough energy during the day.
It is easy to get into bad eating habits. You may eat your breakfast in a hurry to get to school on time. Or you may not have time for a good lunch. It may seem easy to finish your supper with fish and chips all the time. But you will find yourself tired in these days and you can not think quickly.
Watching what you eat will help keep your body healthy and strong. It is also good to take some exercise. It will help you eat more if you take a walk or play games in the open air. Having a good eating habit with some exercise is the key to your health.
【小题1】Which of the following diets do you think is the best one?
| A．Eggs, tomatoes and chicken. |
| B．Milk, bread, cabbages and beef. |
| C．Corn, fish, cream and pork. |
| D．Rice, bean curd（豆腐）, apples, fish and chicken. |
| A．Going to school without any breakfast |
| B．Eating fish and chips for supper all the time.. |
| C．Having at least one food from all four groups each meal. |
| D．Having different food from all four food groups. |
A. every person needs food to grow well
B taking exercise can keep your body strong
C. the right kind of food with exercise will keep you healthy
D. enough energy helps people think more quickly
【小题4】The underlined word “dairy” in the second passage means _____.
| A．the food made out of cows such as milk and butter |
| B．she shop that sells milk and butter |
| C．a farm where cows are kept |
| D．a place where milk products are made. |
| A．The Four Food Groups | B． A Healthy Diet |
| C．Your Body And Food | D．Food And Your Health |