问题
单项选择题
与胎儿胎盘功能关系密切的激素是（）。
A．胎盘生乳素
B．孕酮
C．雌酮
D．雌二醇
E．雌三醇
答案
参考答案：E
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与胎儿胎盘功能关系密切的激素是（）。
A．胎盘生乳素
B．孕酮
C．雌酮
D．雌二醇
E．雌三醇
参考答案：E
When I had something difficult to do, I used to(过去常常) ask my mum for help. But she always said, “Do it _, dear.” I would get so angry（生气）. I thought she was mother in the world! For example, one day, I decided some friends to my home. My bedroom was very dirty. Books were all over the table and ground. I didn’t make my bed. I asked my to help me clean it. But she said seriously(严肃地),“Do it yourself, girl.” Because of my “lazy mum”, I have to my clothes and clean my room. I have to help my parents . I even have to go to the dentist(牙医) . It is really hard to do everything on my own, I have learned a lot. As time goes by, I understand my mother. It’s her “laziness” that makes me clever and diligent(勤奋的). Just as my mum always says，“A lady can’t be lazy, or(否则) she’ll be crazy. can make you sunny(阳光)!” great mother! Don’t you think so? A good mother is worth a hundred teachers!
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