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  3. It may come as a surprise to many an exhausted mother or father—but thinking about your children could improve your memory, a st

It may come as a surprise to many an exhausted mother or father—but thinking about your children could improve your memory, a st

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问题          It may come as a surprise to many an exhausted mother or father—but thinking about your children could improve your memory, a study suggests.
         Researchers【C1】__________that when thinking about raising children, an adult’s memory "goes up a gear". It seems that the【C2】__________ necessity to protect children helps our brains to store information we would otherwise forget.
         Researchers at Binghamton University, New York carried out a series of tests to see if thinking about bringing up children improved one’s sense of【C3】__________and found that it did- Ralph Miller, a psychology professor said, "Our ability to think and memorize information arises from our nervous systems. As our nervous systems are a product of【C4】__________and past experiences, one can【C5】__________expect that how well we memorize information today is【C6】__________ by natural selection that occurred among our ancestors long ago."
         Professor Miller and his colleagues tested the theory by asking【C7】__________to imagine they were living in the ancient grasslands of Africa, and to remember a series of words such as rock, apple, ball and stick. They were asked to rate the relevance of each item to how much use it was to their survival. When presented with a【C8】__________that involved raising children they remembered many more of the words. But in another situation—a task involving finding a mate— the memory was not so good.
         The researchers said that while both activities【C9】__________to survival, our prehistoric ancestors may not have realized that mating could result in children because of the nine months between mating and【C10】__________. This research demonstrates that our genes not only have an impact on our anatomy(解剖构造) and physiology, but also on the ways in which we think.
A) biological
B) birth
C) claim
D) consequent
E) evolution
F) influenced
G) objected
H) premier
I) reasonably
J) recall
K) relate
L) reverse
M) scenario
N) simply
O) subjects
【C2】
选项
答案A
解析 形容词辨析题。本空位于定冠词the和名词necessity之间，因此应填入形容词或名词以修饰necessity。本句大意为，似乎保护孩子的必要有助于我们的大脑储存我们原本会忘记的信息。众所周知，保护孩子是人类的天性，是一种生物本能，因此本空应填入含有“天生的，生物的”等类似含义的形容词或名词。备选项中只有biological 符合句意，因此答案为A。
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