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【单选题】
摩尔根发现的遗传学规律是A.
分离规律
B.
自由组合规律
C.
连锁互换规律
D.
杂交规律
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举一反三
【单选题】I don’t have to do it and _________ do you. We’re both too busy.
A.
more than
B.
no more than
C.
once more
D.
no more
【简答题】We can not pay too high a price for our national security.
【单选题】we cannot pay too high a price for our national security.
A.
我们不能为了国家的安全而花太大的代价。
B.
为了国家的安全再打的代价也值得。
【单选题】We cannot pay too high a price for our national security.
A.
我们不能为了国家的安全而花太大的代价。
B.
为了国家的安全花再大的代价也值得。
【单选题】We should start (at once) and not waste (too) much time (to argue) (about the) procedure.
A.
at once
B.
too
C.
to argue
D.
about the
【简答题】以工件的外圆柱面作定位基准时,定位元件可以用圆柱孔、____、V形块和自动定心等方式定位。
【简答题】According to Wang Zhile, if the national security should not be too frequently mentioned, because it is not ______.
【单选题】We have been to the theatre for too many times! Not once since we arrived here ______ to the movies!
A.
we have gone
B.
we have been
C.
had we gone
D.
have we been
【单选题】We should start at (once) and not waste (too) much time (to argue) (about) the procedure.
A.
once
B.
too
C.
to argue
D.
about
【简答题】以工件的外圆柱表面作定位基准时，定位元件可以用圆柱孔、()、V型块和自动定心等方式定位。
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