题干

女子出现骨盆宽大、乳腺发达、声调较高等第二性征是下列何种激素的作用?(  )

A:生长激素

B:雌性激素

C:雄性激素

D:甲状腺激素

上一题 下一题 0.0难度 选择题 更新时间:2015-03-31 05:34:37

答案(点此获取答案解析)

B

同类题2

根据短文内容回答问题


Dear Mike,

      I'm so glad you're coming to China! Your mother,our foreign English teacher,told me you're worried about what you should and shouldn't do as a guest in China.Here's some advice.You will probably be invited to a big meal. You may find it earlier than you expect because Chinese people eat dinner much earlier than people in the West.There will be a lot of different dishes,not just three courses.You may find it difficult to use chopsticks if you haven't tried before.It's a good idea to get some practice.When the food is served,you should take time to look at it. The preparation takes a long time and everything will look beautiful.The plates will be placed in the middle of the table,for everyone to share.Take a little of everything and then have some more of the things you like.Chinese people like to talk about food,so it's a good topic of conversation.At the end of the meal,you will usually be served with fruit.Eat your fruit,thank your friends, and go.

      I hope this is helpful.E-mail me if you have any other questions. 

                                                                                                                              Yours,

                                                                                                                                   David Zhang