Forget chip fat, sugar cane or rapeseed oil – the latest source of biofuel could be waterinelons. Scientists have discovered that the fruit is a great source of sugar that can be readily distilled in 题目和参考答案——青夏教育精英家教网—

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Forget chip fat, sugar cane or rapeseed (油菜籽) oil – the latest source of biofuel could be waterinelons. Scientists have discovered that the fruit is a great source of sugar that can be readily distilled (蒸馏) into alcohol to power cars and farm machinery.

And because sellers reject 360,000 tons of “substandard” fruit annually in America alone they could be used as an economical way to make fuel. The waste from US growers could produce nearly two million gallons (nine million litres) of biofuel per year.

In the study, researchers at the US Deparument of Agriculture set out to determine the biofuel potential of juice from rejected watermelons – those not sold due to cosmetic imperfections, and currently ploughed back into the field.

About a fifth of each annual watermelon crop is left in the field because of surface blemishes (瑕疵) or because they are misshapen.

Dr Wayne Fish, who led the team, found that 50 percent of the fruit was fermentable (可发酵的) into alcohol which could provide valuable fuel.

“We’ve shown that the juice of these melons is a source of readily fermentable sugars, representing and unexploited raw material for alcohol biofuel production.” he said.

The study, published in the journal Biotechnology for Biofuels, discovered that watermelons could produce around 20 gallons of fuel per acre from fruit that otherwise would go to waste.

Production of biofuels has been targeted by western governments as a way to support renewable energy targets.

The European Union has a target for 2013 that 5.75 percent of transport fuels should come from biological sources, but the target is unlikely to be met.

The British government’s Renewable Transport Fuel Obligation requires five percent of the fuel sold at the pump by 2013 to be biofuel.

63．The passage mainly tells us 　　　　.

　　　 A．watermelons could be used to make fuel

　　　 B．western countries aim at producing bifuels

　　　 C．fuel made from watermelons has many advantages

　　　 D．watermelon juice will be the largest source of renewable energy

64．We can learn from the text that 　　　　　.

　　　 A．about two gallons of fuel could be made from rejected fruit per acre

　　　 B．sellers in the world throw away 360,000 tons of watermelons every year

　　　 C．half of the watermelons were fermentable into alcohol to provide energy

　　　 D．five percent of fuel is required to be biofuel from watermelons by 2013 in Britain

65．The underlined word “cosmetic” in Paragraph 4 probably means 　　　　.

　　　 A．inside B．flavor C．freshness D．appearance

66．We can infer from the passage that 　　　　.

　　　 A．it will cost a lot to make biofuel from watermelons

　　　 B．the EU is likely to meet its target of transport fuels from biological sources

　　　 C．western countries are engaged in biofuel study but still have a long way to go

　　　 D．watermelon juice has been used as a resource of sugars to produce alcohol biofuel.

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B．whatever he does make no sense

C．he is worried about his writing.

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【小题2】When the writer uses the word “forget” , his real meaning is _______.

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C．Somebody hates modern techniques such as the cellphone.

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【小题3】Which of the following is right?

A．It is better to go back to the ancient times since we are so busy now.

B．The writer is unwilling to help others since he is selfish.

C．Slowing down to find time and space to think and enjoy oneself is urgent.

D．We have more to say because we have more ways to communicate.

【小题4】What does the underlined word mean?

【小题5】What is the main idea of the article?

A．The importance of spending time in quiet.

B．We can do some sports such as yoga to relax.

C．Principle or asceticism is important in one’s life.

D．The more we communicate, the more we will be closer.

Nowadays more and more people are trapped in too busy work to relax themselves. We have no time to tell a bed-time story to our children, or enjoy a nice dinner with our family, or take a break to think about how we live the precious life, or even meet friends. All we notice is that the distinctions that used to guide and steady us ------ between Sunday and Monday, public and private, here and there ------ are gone. We have more ways to communicate, but less and less to say. Partly because we’re so busy communicating.
Maybe that’s why more and more people I know, even if they have no religious commitment, seem to be turning to yoga, or meditation, or tai chi. Some friends of mine try to go on long walks every Sunday, or to “forget” their cell phones at home. A series of tests in recent years has shown that after spending time in quiet rural settings, subjects “exhibit greater attentiveness, stronger memory and generally improved cognition. Their brains become both calmer and sharper.” More than that, empathy, as well as deep thought, depends on neural processes that are “inherently slow. ” The very ones our high-speed lives have little time for.
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【小题1】The writer sometimes doesn’t do anything because ________.

A．he is out of work .	B．whatever he does make no sense
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【小题2】When the writer uses the word “forget” , his real meaning is _______.

A．Somebody really forgets his cell phone at home.

B．Somebody thinks cell phone is not a suitable means of communication.

C．Somebody hates modern techniques such as the cell phone.

D．Somebody leaves his cell phone at home on purpose.

【小题3】Which of the following is right?

A．It is better to go back to the ancient times since we are so busy now.

B．The writer is unwilling to help others since he is selfish.

C．Slowing down to find time and space to think and enjoy oneself is urgent.

D．We have more to say because we have more ways to communicate.

【小题4】What does the underlined word mean?

【小题5】What is the main idea of the article?

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B．We can do some sports such as yoga to relax.

C．Principle or asceticism is important in one’s life.

D．The more we communicate, the more we will be closer.

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1.The writer sometimes doesn’t do anything because ________.

A. he is out of work

B. whatever he does makes no sense

C. he can enjoy himself in his leisure time

D. he is worried about his writing

2.What does the writer mean when using the word “forget” (in the 2^nd paragraph)?

A. Trapped in busy work, they are really forgetful.

B. They think cell phone is not a suitable means of communication.

C. They leave their cell phones at home on purpose.

D. They hate modern techniques such as the cell phone.

3.Which of the following is right?

A. The writer is unwilling to help others since he is selfish.

B. Slowing down to find deep-down joy is necessary.

C. It is better to go back to the ancient times since we are so busy now.

D. We have more to say because we have more ways to communicate.

4.What is the main idea of the article?

A. The importance of spending time in quiet.

B. We can do some sports such as yoga to relax.

C. To feel better, we should do nothing at all.

D. The more we communicate, the better we will feel.

Maybe that’s why more and more people I know, even if they have no religious commitment, seem to be turning to yoga, or meditation, or tai chi. Some friends of mine try to go on long walks every Sunday, or to “forget” their cell phones at home. A series of tests in recent years has shown that after spending time in quiet rural settings, subjects “exhibit greater attentiveness, stronger memory and generally improved cognition. Their brains become both calmer and sharper.” More than that, empathy, as well as deep thought, depends on neural processes that are “inherently slow. ” The very ones our high-speed lives have little time for.

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1.The writer sometimes doesn’t do anything because ________.

A．he is out of work . B．whatever he does make no sense

C．he is worried about his writing. D．he can enjoy himself in his leisure time.

2.When the writer uses the word “forget” , his real meaning is _______.

A．Somebody really forgets his cell phone at home.

B．Somebody thinks cell phone is not a suitable means of communication.

C．Somebody hates modern techniques such as the cell phone.

D．Somebody leaves his cell phone at home on purpose.

3.Which of the following is right?

A．It is better to go back to the ancient times since we are so busy now.

B．The writer is unwilling to help others since he is selfish.

C．Slowing down to find time and space to think and enjoy oneself is urgent.

D．We have more to say because we have more ways to communicate.

4.What does the underlined word mean?

A．difference B．sameness C．simplicity D．complication

5.What is the main idea of the article?

A．The importance of spending time in quiet.

B．We can do some sports such as yoga to relax.

C．Principle or asceticism is important in one’s life.

D．The more we communicate, the more we will be closer.

Maybe that's why more and more people I know，even if they have no religious commitment, seem to be turning to yoga, or meditation, or tai chi. Some friends of mine try to go on long walks every Sunday, or to "forget” their cellphones at home. A series of tests in recent years has shown that after spending time in quiet rural settings, subjects “ exhibit greater attentiveness，stronger memory and generally improved cognition. Their brains become both calmer and sharper, ” More than that, sympathy, as well as deep thought, depends on neural processes that are “inherently slow, ” the very ones our high-speed lives have little time for.

In my own case, I turn to unusual and often extreme measures to try to keep my good sense and ensure that I have time to do nothing at all. I've not yet used a cellphone and I've never tweeted or entered Facebook. I try not to go online till my day's writing is finished, and I moved from Manhattan to rural Japan.

None of this is a matter of principle or asceticism (苦行主义)：it's just pure selfishness. Nothing makes me feel better, calmer, clearer and happier than being in one place, absoAed in a book, a conversation, a piece of music. It's actually something deeper than mere happiness： it's joy, which the monk David Steindl-Rast describes as “that kind of happiness that doesn't depend on what happens. ” That is the highest of the highest we have been longing for~The Joy of Quiet.

43.The writer sometimes doesn't do anything because _____.

A. he is out of work B. whatever he does make no sense

C. he is worried about his writing D. he can enjoy himself in his leisure time

44.When the writer uses the word “forget”，his real meaning is _____ .

A. somebody really forgets his cellphone at home

B. somebody leaves his cellphone at home on purpose

C. somebody hates modern techniques such as the cellphone

D. somebody thinks cellphone is not a suitable means of communication

45.The underlined word “distinctions’ ，means _____.

A- outcome B. similarity C. difference D. complication

46.What is the main idea of the article?

A. It is important to spend time in quiet circumstances.

B. We can do some sports such as yoga to relax.

C. Principle or asceticism is important in one's life.

D. The more we communicate, the more we will be closer.

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