问题
单项选择题 B1型题
排卵发生在()
A.下次月经来潮前14天
B.妊娠10周后
C.排卵后7~8天
D.月经周期1~4天
E.月经周期11~14天
答案
参考答案:A
排卵发生在()
A.下次月经来潮前14天
B.妊娠10周后
C.排卵后7~8天
D.月经周期1~4天
E.月经周期11~14天
参考答案:A
情景交际。 A: What a nice camera! __1__ B: It was invented by Joseph Nicephore Niepee. A: Oh, I see, __2__ B: In 1827. A: What's this in English?__3__ B: It's called an English Learning Machine. A: __4__ B: It may be made of steel. A: __5__ B: It is used for helping us to improve our English.
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