Forget chip fat, sugar cane or rapeseed oil ---- the latest source of biofuel could be watermelons．

　　Scientists have discovered that the fruit is a great source of sugar that can be readily distilled（蒸餾）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 United States Department 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 per cent of the fruit was fermentable（可發(fā)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 an 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 2010 that 5．75 per cent 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 per cent of the fuel sold at the pump by 2010 to be biofuel．

1．The passage mainly tells us ______．

A． western countries aim at producing biofuels

    B． watermelons could be used to make fuel

    C． the advantages of fuel made from watermelons

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

2．Which of the following is NOT the reason why so many watermelons are deserted in America each year?

    A． They are substandard．                             B． They are imperfect．

    C． They are misshapen．               D． They are oversupplied．

3．It can be learned from the text that ______．

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

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

    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 2010 in Britain

4．The underlined word “cosmetic” in Paragraph 5 probably means ______．

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

5．We can infer from the passage that ______．

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

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

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

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

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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.

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

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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.

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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.

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

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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 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 (苦行主義)：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.

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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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