Some people say that the best way to reduce the size of your waist is to do stomach exercise. Many people believe that when specific muscles are exercised, the fatty tissues in the immediate area are 题目和参考答案——青夏教育精英家教网—

题目内容

Some people say that the best way to reduce the size of your waist is to do stomach exercise. Many people believe that when specific muscles are exercised, the fatty tissues (组织) in the immediate area are burned up. The truth is that exercise burns fat from all over the body and not from one specific area. Of course, if you reduce the fat throughout your body, you will certainly see results around your waist too.

Some people believe that you need to exercise twice a week in order to keep a sufficient level of physical fitness. However, studies directed by American scientists show that unexercised muscles lose their strength very quickly. Within 48 to 72 hours, you must use the muscles again to reestablish (重建) the good physical effects. And what does that mean to you? American scientists concluded that while daily exercise is most helpful, exercising every other day or three days a week will keep a sufficient level of physical fitness.

Is it true that you burn more calories running one mile than walking the same distance? The answer is no. The truth is that you use the same amount of energy whether you walk or run the mile, since in both cases you are moving the same weight the same distance. The speed does not matter. Of course, if you run rather than walk for 30 minutes, you will cover more distance, and therefore burn more calories.

If your breathing doesn’t return to normal within 5 minutes after you finish exercising, you have exercised too much. Five minutes or so after exercising, your breathing should be normal, your heart shouldn’t be beating loudly, and you shouldn’t be tired.

1.If you want to reduce the fat around your waist, you should ____.

A．do stomach exercise	B．exercise the waist
C．exercise all the muscles of your body	D．run fast for 30 minutes

2.From the second paragraph, we learn that ____.

A．we only need to exercise twice a week

B．we should exercise three times a week

C．muscles lose their strength after 48 hours

D．we should exercise every other day, or three days a week

3.It can be inferred from the third paragraph that _________ .

A．you will lose more weight running one hour than walking one hour

B．whether you run one mile or walk the same distance, you use the same amount of energy

C．you will lose more weight running one mile than walking the same distance

D．both A and B

4.If you have exercised too much, _______.

A．your breathing will take longer than 5 minutes to return to normal after you finish exercising

B．your breathing will return to normal within 5 minutes after finishing exercising

C．your heart will not be beating loudly

D．you will be too tired to move

5.This passage tells us that _________.

A．it is better to do more running than walking

B．the more exercise you do, the healthier you will be

C．the unexercised muscles must be used again within 48 to 72 hours

D．in order to lose weight, you have to run fast

【答案】

1.C

2.D

3.D

4.A

5.C

【解析】饮料是被做的，所以用不定式的被动式。

1.C。由第一段我们可以得知每一项运动都能使全身的肌肉活动，因此减去的是全身的脂肪，而不是某个部位的脂肪。

2.D。依据为第二段的最后一句话。

3.D。从第三段的第三句话和最后一句话可得到答案。

4.A。根据最后一段的第一句话可得到答案。

5.C。根据第二段中的“However, studies directed by American scientists show that unexercised muscles lose their strength very quickly. Within 48 to 72 hours, you must use the muscles again to reestablish the good physical effects.”这两句可得出答案。

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A. people can not change their skin colour without any pain

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55. The writer’s attitude towards the discovery is ________.

A. neutral B. negative C. positive D. indifferent

Can people change their skin colour without suffering like pop king Michael Jackson? Perhaps yes. Scientists have found the gene that determines skin colour.

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However, Keith Cheng, leader of the research team, points out that the mutation is dif ferent in human and zebrafish genes.

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But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vit amin D. So the related gene changes, according to Cheng.

Asians have the same version of the gene as Africans, so they pr obably acquired their light skin through the action of some other gene that affects skin colour, said Cheng.

The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin colour without damaging it like chemical treatment did on Michael Jackson.

1.. The passage mainly tells us that ________.

A. people can not change their skin colour without any pain

B. the new discovery could lead to search into ways to change skin colour safely

C. pop king Michael Jackson often changed his skin colour as he liked

D. scientists have found out that people’s skin colour is determined by the gene

2.. Scientists have done an experiment on a dark-striped zebra fish in order to ________.

A. find the different genes of humans’

B. prove the humans’ skin colour is determined by the pigment gene

C. find out the reason why the Africans’ skin colour is dark

D. find out the ways of changing peopl’s skin colour

3.. The reason why Europeans are light-skinned is probably that ________.

A. they are born light-skinned people