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【单选题】
基因型为Aa的,形成卵细胞的过程中,由于同源染色体之间发生了交叉互换,从而使相互靠近的非姐妹染色单体交换了分别含有A和a的对应部分,则等位基因Aa的完全分离将发生在 [     ]
A.
卵原细胞中
B.
减数第一次分裂后期
C.
减数第二次分裂后期
D.
初级卵母细胞中
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举一反三
【单选题】I____ single, you _____ married and Judy _____ divorced.
A.
am, are, is
B.
am, is, are
C.
is, am, are
D.
are, is, am
【简答题】Are you divorced?
【单选题】—Hey, Jack. You ________ on the phone just now. But you weren’t here and the man left a phone number. —Oh? I was in the library.
A.
wanted
B.
are wanted
C.
were wanted
D.
have wanted
【简答题】The percentage of remarriage among divorced Americans is ______.
【单选题】— Do you know the reason why the Whites got divorced? — No, they haven’t quarreled with each other since they got married. _______, they broke up finally.
A.
Somehow
B.
Anyhow
C.
Anyway
D.
Somewhat
【判断题】被保险人向保险公司提出索赔的期限一般为被保险货物在最后卸离港卸离海轮后,最多不超过两年。
A.
正确
B.
错误
【单选题】上述反应的主产物是( )
A.
B.
C.
D.
【单选题】—Hey, Jack. Waste paper ________ here. —Sorry, I won’t do that again.
A.
cannot throw
B.
cannot be thrown
C.
will not throw
D.
will not be thrown
【单选题】—Hey, Jack. Waste paper mustn’t ________ here. —Sorry, I won’t do that again.
A.
throw
B.
be thrown
C.
be throwing
D.
to throw
【单选题】Have you heard that Wang has divorced her husband? —______. She looks quite miserable.
A.
I've heard of it
B.
I've never heard of it
C.
I feel so sorry
D.
It's a pity
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