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  3. Do you believe that only boys do well in science? Does it seem to you that girls have better vocabularies than boys? In your opi

Do you believe that only boys do well in science? Does it seem to you that girls have better vocabularies than boys? In your opi

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问题    Do you believe that only boys do well in science? Does it seem to you that girls have better vocabularies than boys? In your opinion, are boys better at building things? If your answer to each of those questions is "Yes" , you are right.
   On the average, males score higher on tests that measure mathematical reasoning, mechanical ability, and problem-solving skills. Females show superior ability in tests measuring vocabulary, spelling, and memory.
   It is known that bones, muscles and nerves develop faster in baby girls. Usually, too, baby girls talk at an earlier age than boys do. Scientists think there is a physical reason for this. They believe that the nerve endings in the left side of the brain develop faster in girls than in boys. And it is this side of the brain that strongly influences an individual’ s ability to use words, to spell, and to remember things.
   By the time they start to school, therefore, little girls have an advantage that boys do not have. Girls are physically more ready to remember facts, to spell, and to read. These, of course, are skills that are important in elementary school.
   But what have the boys been doing in the years before starting school? They have been developing something called aggression. An aggressive person has courage and energy. He feels strong and independent. He is often the first one to start fight.
Scientists believe that the differences between boys and girls are determined by______.
选项 A、their personal abilities
B、their physical condition
C、their courage and independence
D、their age and sex
答案B
解析 从文章第三段可知，科学家们认为身体原因决定了女孩和男孩在骨骼、肌肉、神经发育上的差异及说话时间的早晚，而文章接着指出男女左脑神经末梢发展情况会影响他们的言语能力和记忆能力。由此可推知，男女身体状况的差异导致了男孩和女孩各方面能力发展时间和程度的不同。故选B。
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