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【单选题】
一朵花中有四枚雄蕊，其花丝二长二短，称为A.
离生雄蕊
B.
单体雄蕊
C.
二强雄蕊
D.
多体雄蕊
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举一反三
【单选题】I've never seen a Shakespeare's play ______ so wonderfully.
A.
performing
B.
performed
C.
perform
D.
is performing
【单选题】It can be seen from the passage that the earth's supply of natural medicines
A.
may never be exhausted.
B.
may be dropping rapidly.
C.
is surprisingly big.
D.
is as rich as ever.
【简答题】I’ve never seen the film, but it ’s ______ to be a very good one. A.said B.told C.spoken D.talked
【单选题】What had the farm owner's daughter never done?
A.
Seen a train.
B.
Seen in a log cabin.
C.
Had a friend visit her.
D.
Seen a sheep.
【单选题】They often() the scientist’s name, but they have never seen him.
A.
learn from
B.
hear from
C.
hear of
D.
listen to
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