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下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文，并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。
{{B}}第一篇{{/B}}

{{B}}Reasoning{{/B}}

Another common type of reasoning is the search for causes and results. We want to know whether cigarettes really do cause lung cancer, what causes malnutrition, the decay of cities, or the decay of teeth. We are equally interested in effects: what is the effect of sulphur of lead in the atmosphere, of oil spills and raw sewage in rivers and the sea, of staying up late on the night before an examination
Causal reasoning may go from cause to effect or from effect to cause. Either way, we reason from what we know to what we want to find out, Sometimes we reason from an effect to a cause and then on to another effect. Thus, if we reason that because the lights have gone out, the refrigerator won’t work, we first relate the effect (lights out) to the cause (power off) and then relate that cause to another effect (re
A. relationships between cause and results
B. classification of reasoning
C. some other common types of reasoning
D. some special type of reasoning

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[单项选择]
下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题。
{{B}}第一篇{{/B}}

{{B}} Shakespeare{{/B}}
When talking about the world’s greatest poet and greatest dramatist, only one name can possible suggest itself; that of William Shakespeare. Nearly every Englishman has some knowledge, however slight, of the work of this greatest writer. We use words, phrases and quotations form Shakespeare’s writings that have become part of the common property of English-speaking people. Most of the time we are probably unaware of the source of the words we use. For example, and old lady, after seeing a performance of Hamlet complained, "It was full of well-known proverbs and quotations!"
Shakespeare made full use of the great resources of the English language. Most of us use about five thousand words in
A. Shakespeare used an enormous number of words of the English language.
B. Shakespeare expressed his appreciation of the richness of the English language.
C. Shakespeare studied the various usages of the English language.
D. Shakespeare tried to maintain the original meaning of many English words.

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[单项选择]
下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。
{{B}}第一篇{{/B}}

{{B}}Sugar Power for Cell Phones{{/B}}
Using enzymes commonly found in living cells, a new type of fuel cell produces small amounts of electricity from sugar. If the technology is able to succeed in mass production, you may some day share your sweet drinks with your cell phone.
In fuel cells, chemical reactions generate electrical currents. The process usually relies on precious metals, such as platinum. In living cells, enzymes perform a similar job, breaking down sugars to obtain electrons and produce energy.
When researchers previously used enzymes in fuel cells, they had trouble keeping them active, says Shelley D. Minteer of St Louis University. Whereas biological cells continually produce fresh enzymes, there’s no
A. When enzymes can be commonly found in living cells.
B. When the technology of producing a new type of fuel cell appears.
C. When the technology of a new type of fuel cell is suitable for mass production.
D. When the technology of mass producing cell phones appears.

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