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【单选题】
假定一个杂种细胞里含有3对染色体,其中A、B、C来自父本,A’、B’、C’来自母本。通过减数分裂能形成()种配子A.
4
B.
6
C.
8
D.
16
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举一反三
【单选题】This was a piece of news of great importance to every man and woman who ______ waiting anxiously outside the building.
A.
were
B.
has been
C.
have been
D.
was
【单选题】It is______in the constitution that every man and woman eighteen years of age or older is eligible to vote for the candidate of his or her choice.
A.
laid for
B.
laid down
C.
laid in
D.
laid aside
【单选题】Here is a message of importance to every man and woman who ____.
A.
vote
B.
votes
C.
are voting
D.
voted
【简答题】What club do you want to j
【单选题】A:________________ B: I want a job as a policeman.
A.
what's your job?
B.
What kind of job do you want?
C.
What do you do?
【单选题】Here is a message of importance to every man and woman who ______.
A.
vote
B.
votes
C.
voting
D.
voted
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