题目内容
When we exercise hard, we burn fat. But have you ever wondered where exactly the fat goes?
Some doctors think that fat is changed into heat and released in the air. Others think the body burns it. Some even joke that the fat fairy comes and takes it. That is why you always weigh less in the morning.
Now a new study from the University of New South Wales in Australia reveals the mystery. “the correct answer is that most of the mass is breathed out as carbon dioxide(二氧化碳). It goes into thin air,” says the study’s lead author, Ruben Meerman, to Science Daily. 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 carbon dioxide through the lungs. The rest of the weight —1.6 kilograms— becomes water that leaves the body in the form of fluids(液体) such as urine(尿), sweat, breath and tears. “None of this is obvious to people because we can’t see the carbon dioxide gas we breathe out,” said Meerman.
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) can make you uncomfortable. You may feel dizzy and become unconscious(无意识的), according the study. So how to lose weight healthily? The key is to eat less and move more. You many have heard this many times.
During a day, a 70kg person breathes out about 200g of carbon dioxide. So if the same person wants to lose weight, he or she can do some light exercise, for example, jogging. This can help lose 240g of carbon dioxide.
1.According to the new study, where does our fat go when we exercise a lot?
A.It is changed into heat and given off in the air. B.The body burns it.
C.The fat fairy comes and takes it. D.Most of it is breathed out as carbon dioxide.
2.What will happen to people if they breathe more than the body’s metabolic rate?
A.They will put on more weight. B.They will feel comfortable.
C.They may become unconscious. D.They may not lose weight at all.
3.Which of the following is a better way to lose weight?
A.Sitting still and breathing more. B.Sleeping a lot and breathing a lot.
C.Eating less and exercising more. D.Eating more and doing some light exercise.
4.Which is true according to the study from University of New South Wales?
A.The fat is changed into heat and released in the air.
B.Most of the kilograms of fat as they are lost are breathed out as carbon dioxide.
C.People can see the carbon dioxide gas we breathe out.
D.If we breathe more than the body’s metabolic rate, we will feel good.
5.During a week , how much carbon dioxide does a 70kg person breathes out?
A.240g B.200g C.1400g D.1680g
一线名师权威作业本系列答案假如你是李华，今天你班召开了“敬畏自然，保护野生动物”的主题班会，此次活动让你认识到保护野生动物的重要性。班会后，你打算写一份英文倡议书投给你校英文校报，以此号召全校同学行动起来，为保护野生动物而努力。
保 护 野 生 动 物 | 描述现状（数量减少、消失） |
分析造成该现状的主要原因（栖息地变少、人类的捕杀） | |
作为中学生，我们能做些什么（保护环境、拒绝野味、……） | |
发出呼吁 |
要求：1. 内容须包括图示中的所有要点和一个补充要点，可适当增加细节，以使行文连贯；2. 语言表达要准确，语意要通顺、连贯；
3. 词数不少于100，倡议书的格式和开头已给出，但不计入总词数。
Dear fellow students,
Wild animals are our friends. We live on the same earth. So protecting them is protecting ourselves.
B.
D.