When we exercise hard，we burn fat （脂肪）．But have you ever wondered where exactly the fat goes？
Some doctors think that fat is changed into heat and given off in the air．Others think the body burns it．Some even joke that someone comes and takes it．That's why you always weigh less in the morning．
Now a new study from Australia solves the mystery．
"The correct answer is that most of the fat is breathed out as CO2．It goes into thin air，"says the study．
Scientists followed the atoms （原子）in 10 kilograms of fat as they are lost．They found that 8.4 of those kilograms are breathed out as CO2 through the lungs （肺）．The other weight，1.6 kilograms，becomes water and leaves the body．
"None of this is easy to understand because we can't see the CO2 we breathe out，said the study's lead expert．
Does that mean you can lose more weight by breathing more？It is not as easy as you think．Breathing more than the body's metabolic rate （新陈代谢速度）can make you uncomfortable．You may feel dizzy （眩晕的）and become unable to see，move or feel，according to the study．
So how can people lose weight healthily？The key is to eat less and move more．You may have heard this many times．During a day．a 70kg person breathes out about 200g of CO2．So if the same person wants to lose weight，he or she can do some light exercise，for example，walking fast．This can help lose 24Og of CO2．
根据短文内容．选择圾佳答案．
（1）Where is the new study from？
A．Japan．
B．Australia．
C．Canada．
D．America．
（2）According to the new study，where does our fat go when we exercise a lot？
A．The body burns it．
B．Someone comes and takes it．
C．It is changed into heat and given off in the air．
D．Most of it is breathed out as CO2．
（3）What will happen to people if they breathe more than the body's metabolic rate？
A．They will lose weight healthily．
B．They will feel comfortable．
C．They may become unable to move．
D．They may becomc healthier．
（4）Which of the following is the best way to lose weight？
A．Sitting still and breathing more．
B．Sleeping a lot and breathing more．
C．Eating less and exercising more．
D．Eating more and doing some light exercise．
（5）The passage mainly tells us ．
A．where fat goes when we exercise
B．why we can lose weight healthily
C．how we should do some exercise
D．what we should do to burn fat．
Joy always rides her bike to school. It’s four miles to school and it takes her about fifteen minutes. Joy likes riding to school. She says it’s good for her health.
Edward usually goes to school by bus. He likes talking with his friends on the bus. It’s about ten minutes’ journey (旅程) to school by bus.
Mary’s home is near the school. She usually walks to school. It’s about five minutes’ walk. Mary says she likes taking walks after meal.How does Joy go to school?
Is riding good for Joy’s health?
Why does Joy like riding to school?
Does Edward like talking with friends on the train?
How far is it from Mary’s home to her school?
Every year there is a Spring Festival in China. Usually it is in January or February. It is the most important festival in China. So before it comes， everyone has to prepare things. They buy pork， beef， chicken， fruits and many other things. And they often make a special kind of food—“dumplings”. It means “come together”. On the day before the festival，parentsbuy new clothes for their children. Children also buy presents for their parents. On the Spring Festival Eve（除夕），all the family members come back to their hometown. This is a happy moment. Some sing and dance，some play cards and others get the dinner ready. When they enjoy the meal， they give each other the best wishes for the coming year. They all have a good time.Which is the most important festival in China?
A. The mid-autumn Festival.
B. The Spring Festival.
C. Children’s Day.When is the Chinese Spring Festival usually celebrated?
A. In March or April.
B. In May or June.
C. In January or February.is the special kind of food for the Spring Festival in China.
A. Chicken B. DumplingC. FishWhat’s the meaning of the food “dumplings” for Chinese people in the Spring Festival?
A. Look up.
B. Help yourself.
C. Come together.The family when they are having dinner together on the Spring Festival Eve.
A. give each other the best wishes
B. buy each other presents
C. sing， dance and play cards
At midnight (半夜) Mr. King coughed again. He got up and took some medicine. Before he lay down again, he smoked. And he couldn't go to sleep any longer. He found the medicine book and began to read it. He was afraid he had lung cancer(肺癌). He seemed to see death was waiting for him. Tears (眼泪)ran down his face. He didn’t see his wife was standing by him.
“What’s wrong with you, dear?”asked the woman.
“Nothing,” the old man answered and covered his face with his hands.
The old woman opened the book and understood at once. She said, “You must stop smoking right now.”
“I began to smoke when I was nine, you know. How can I do that?”
“But I think health is more important.”
Mr. King coughed again and his wife said, “Go to see a doctor tomorrow. He will be able to help you, I think.”
The doctor told Mr. King to have an X-ray examination（X光检查）of his lungs. And then he looked at the X-ray carefully for a long time.
“Tell me the truth, doctor.” said Mr. King, “Do you see any shadows (阴影) in my lungs?”
“No, I don’t see anything.”
“Yes?” the old man said happily. “Really?”
“Yes. Your lungs are turning black. How can I see any shadows?”Mr. King got up to.
A. smoke again
B. take some medicine
C. read the medicine book.Mr. King coughed because.
A. he couldn’t go to sleep
B. he was afraid to die
C. he smoked too much, so tears ran down his face.
A. Mr. King thought he had lung cancer
B. Mr. King couldn’t understand the book
C. Mr. King was too sad to go to sleepThe doctor told Mr. King to have an X-ray examination because.
A. he was sure the man would soon die
B. he wanted the man to stop smoking right now
C. he wanted to know if there was something wrong with his lugs.Which of the following is true?
A. There was nothing serious with Mr. King.
B. Smoking too much caused Mr. King’s lungs to turn black.
C. The doctor found some shadows in Mr. King’s lungs.
Mr Green works in an office(办公室). Every morning he has breakfast with his wife at 7:30, watches TV, drinks tea(喝茶) and then leaves his home at 8:00 and takes a bus to his office.
Now he still sits comfortably at the breakfast table and watches his news on TV at 8:05. He doesn’t hurry and asks his wife for another cup of tea.
“Another cup?” she says in surprise (吃惊的). “Don’t you need to go to the office today?” “The office?” he says, “I think I’m at the office!”Mr Green works in a(an) ______.
| A．school | B．hotel |
| C．office | D．hospital |
Mr Green usually goes to work by _______.
| A．car | B．bus |
| C．bike | D．train |
Mr Green likes ________ every day.
| A．running | B．playing basketball |
| C．watching TV | D．drinking coffee |
Mrs Green is surprised because Mr Green_________.
| A．doesn’t drink tea |
| B．doesn’t watch TV news |
| C．doesn’t go to work |
| D．doesn’t have breakfast |
Mr Green forgets(忘记) that he is _________.
| A．at home | B．at his office |
| C．on the bus | D．in his car |
考点：记叙文。
June is from England. Her family are in Beijing now. She is fourteen years old. The date of her birth is September seventh. Her father, Mr Smith, is an English teacher. And her mother, Mrs Smith, is an English teacher, too. They all like Chinese movies. Mr Smith likes action movies. He thinks they are really exciting. His favorite actor is Jet Li. Mrs Smith likes Beijing Opera. She thinks she can learn much about Chinese history by seeing them. And June herself likes comedies. Her favorite actor is Zhao Benshan. She thinks he is very funny. She also thinks Zhao Benshan’s movies are better(更好) than Rowan Atkinson’s. Mr Smith and Mrs Smith like Beijing Roast Duck(北京烤鸭). They often go to Quanjude to have it.June is __________.
| A．a Chinese boy | B．a Chinese girl |
| C．an American girl | D．an English girl |
June is ___________.
| A．twelve | B．thirteen |
| C．fourteen | D．fifteen |
June’ s birthday is ________.
| A．December seventh |
| B．September seventh |
| C．December eleventh |
| D．September eleventh |
________ likes action movies.
| A．June | B．Mr Smith |
| C．Mrs Smith | D．Nobody |
________ like(s) Beijing Roast Duck.
| A．June | B．Mr Smith |
| C．Mrs Smith | D．Mr Smith and Mrs Smith |