问题
填空题
性激素的功能有（）等。
答案
参考答案：促进生殖器官发育、促进副性征出现、维持性行为
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性激素的功能有（）等。
参考答案：促进生殖器官发育、促进副性征出现、维持性行为
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| Most American families are smaller than the families in other countries. Most American families have one or two 1 and one or two children each. Children in the U.S. will 2 their parents' home when they grow up. They usually live 3 their parents because they want to find good jobs. They often 4 to their parents or telephone them. And they often go to visit their parents on 5 . Parents usually let their children choose their 6 jobs. Americans think it 7 for young people to decide on their lives by themselves. Children are asked to do some work 8 their house. And in many families, children are 9 for doing some housework so that they can learn 10 to make money for their own use. | ||||
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