单选题
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 26 that when thinking about raising children, an adult's memory 'goes up a gear'. It seems that the 27 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 28 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 29 and past experiences, one can 30 expect that how well we memorize information today is 31 by natural selection that occurred among our ancestors long ago.' Professor Miller and his colleagues tested the theory by asking 32 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 33 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 34 to survival, our prehistoric ancestors may not have realized that mating could result in children because of the nine months between mating and 35 . 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 F. influenced K. relate B. birth G. objected L. reverse C. claim H. premier M. scenario D. consequent I. reasonably N. simply E. evolution J. recall O. subjects
【答案解析】名词辨析题。本空位于asking之后，应填入表示人的名词构成ask sb. to do sth. 结构。本段介绍了米勒教授的实验是如何进行的。本句大意为，米勒教授和他的同事们测试了这一理论，他们让______想象自己生活在非洲古老的草原上。由句意可知，是实验对象被要求想象生活在草原上，因此本空应填subjects。