第48题___________

A．Its opponents argue, however, that it will stop global warming.

B．Its opponents fear that it will damage the marine ecosystem, and now a computer model shows that the trick would also be remarkably inefficient.

C．As plankton die and settle on the ocean floor, their carbon is supposedly locked up in the seabed.

D．They found that 100 years later only between 2 and 11 per cent, of the extra carbon that was originally taken up by plankton had actually been removed from the atmosphere.

E．"These are newer and better models."

F．Ocean fertilisation is not the answer to global warming.

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参考答案

答案解析

看横线前后的内容，横线前面的句子开头说“Jorge Sarmiento from Princeton and his colleagues”(Jorge Sarmien to和他的同事们)，是表示人的复数。选项当中与之对应的只有D选项，因为D选项是以they开头的，刚好可以表示“他们”的意思。本题答案为D选项。

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1 第49题___________

A．Its opponents argue, however, that it will stop global warming.

B．Its opponents fear that it will damage the marine ecosystem, and now a computer model shows that the trick would also be remarkably inefficient.

C．As plankton die and settle on the ocean floor, their carbon is supposedly locked up in the seabed.

D．They found that 100 years later only between 2 and 11 per cent, of the extra carbon that was originally taken up by plankton had actually been removed from the atmosphere.

E．"These are newer and better models."

F．Ocean fertilisation is not the answer to global warming.

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2 第50题___________

A．Its opponents argue, however, that it will stop global warming.

B．Its opponents fear that it will damage the marine ecosystem, and now a computer model shows that the trick would also be remarkably inefficient.

C．As plankton die and settle on the ocean floor, their carbon is supposedly locked up in the seabed.

D．They found that 100 years later only between 2 and 11 per cent, of the extra carbon that was originally taken up by plankton had actually been removed from the atmosphere.

E．"These are newer and better models."

F．Ocean fertilisation is not the answer to global warming.

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3 请根据短文的内容，回答题。

The Difference between Man and Computer

What makes people different from computer programs? What is the missing element that our theories don't yet __________ (51) for? The answer is simple: People read newspaper stories for a reason: to learn more about __________ (52) they are interested in. Computers, on the other hand,don't. In fact, computers don't __________ (53) have interests; there is nothing in particular that they are trying to fred out when they read. If a computer __________ (54) is to be a model of story understanding, it should also read for a "purpose".
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However, these physiological and social goals give __________(58) to several intellectual or cognitive goals. A goal to satisfy hunger gives rise to goals to fmd __________ (59) about the name of a restaurant which __________ (60) the desired type of food, how expensive the restaurant is, the location of the restaurant, etc. These are goals to __________ (61) information or knowledge, what we are calling __________ (62) goals. These goals can be held by computers too; a computer__________ (63) "want" to find out the location of a restaurant, and read a guide in order to do so__________ (64) the same way as a person might. While such a goal would not __________(65) out of hunger in the case of the computer, it might well arise out of the "goal" to learn more about restaurants.
__________

A．express

B．explain

C．account

D．count

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