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【单选题】
首选促排卵药是（ ）A.
LHRH
B.
绒促性素
C.
尿促性素
D.
氯米芬
E.
溴隐亭
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举一反三
【简答题】I don’t know when he comes tomorrow . If he comes , let me know at once.
【单选题】I don’t know when he ____. But if he ____, I’ll ring you up.
A.
comes, will come
B.
will come, will come
C.
comes, comes
D.
will come, comes
【单选题】I don’t know when he _____. But when he _____ I shall let you know.
A.
comes; will come
B.
will come; comes
C.
comes; comes
D.
will come; came
【单选题】I don’t know when he _________ tomorrow. If he _________, I’ll let you know.
A.
comes, comes
B.
will come, comes
C.
comes, will come
D.
came, will come
【单选题】下列有关电子运动状态的描述,正确的是
A.
s 电子绕核做圆周运动
B.
原子中电子的运动状态可以用四个量子数确定
C.
P 电子绕核走 “ 8” 字
D.
电子在固定的轨道上不停地自旋
【单选题】He is said _______ a new machine recently, but I don’t know when he will make it.
A.
to design
B.
to be designed
C.
to have designed
D.
to have been designing
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