题目内容：

阅读下面的短文，根据短文内容及首字母提示，在短文空白处填入一个恰当的词，使短文内容完整、通顺。

In the past ten years, many scientists have studied the differences between men and women. And they all got the s1. answer: The sexes (性别) are different, b2. their brains are different. And this, the scientists say, makes men and women see the world in d3. ways.

Boys, for example, generally are better than girls at mathematical ideas. Boys also generally are better than girls at the kind of hand and eye movements necessary for ball sports. Girls, on the other hand generally start speaking e4. than boys. And they generally see better in the dark than boys and are better at learning f5. languages.

What m6. men and women better at one thing or another? The answer is the brain. The brain has two sides connected by nerve(神经) tracks. The left side generally is used for mathematics, speech and w7.. The right side is used for artistic creation and the e8. for emotions. In men and women, different areas in each side of the brain d9. differently. In boys, for example, it’s the area used for mathematics. In girls, it is the area used for language skills. Another interesting difference is that the two sides of a man’s brain are c10. by smaller nerves than the two sides of a woman’s brain are.