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【单选题】
关于埋植避孕，下列哪正确的A.
于埋植24小时后起避孕效果
B.
埋植剂避孕宫外孕的发生率高
C.
埋植剂取出后，由于避孕药的持续作用，仍有避孕作用
D.
埋植剂避孕可影响哺乳妇女的乳质和乳量的分泌
E.
埋植避孕几乎没有什么副作用
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【单选题】Owing to the big draft, the ship is not permitted to go alongside until the time of ______.
A.
ebb tide
B.
flood tide
C.
spring tide
D.
slack water
【简答题】(改错) Not until have I passed the examination will I be able to go out to parties.
【单选题】It was not until to bed.
A.
I came back; that my father went
B.
did I came back ; did my father go
C.
I came back ;did my father go
D.
did I came back; that my father went
【单选题】Not until ____ to go on strike.
A.
all the demands has been turned down the workers decided
B.
had all the demands been turned down the workers decided
C.
all the demands had been turned down did the workers decide
D.
had all the demands been turned down did the workers decide
【单选题】Not until all the demands had been turned down ___to go on strike.
A.
did they decide
B.
they decided
【简答题】George Washington Carver George Washington Carver was born in Missouri between 1861 and 18. He was born into slavery. It was not until the end of the Civil War that George became free. As he grew up...
【简答题】He won’t go to bed until she returns home. (Not until...)
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