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【判断题】
大白菜采用大株采种法生产的种子纯度高,抗病性、一致性、结球性等性状能得到较好的保持所以适合于原种繁殖采用。A.
正确
B.
错误
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【单选题】It is high time the nurses realized that there is great ________ between the amount of work they do and what they get paid for it.
A.
discrepancy
B.
disparity
C.
distance
D.
differentiation
【单选题】It is high time the hotel _______ this bedroom since it's in such a mess.
A.
clean up
B.
cleaned up
C.
cleans up
D.
must clean up
【单选题】It is high time the child ______ to the hospital.
A.
is sent
B.
would be sent
C.
must be sent
D.
were sent
【单选题】It is high time the children
A.
went to bed
B.
go to bed
C.
will go to bed
D.
should go to bed
【单选题】I think it is high time the children ___ to school.
A.
go
B.
will go
C.
are going
D.
went
【单选题】“发明大王”爱迪生,经历了8000多次失败,才有了1000多个新发明。这说明( )
A.
要获得成功,付出的代价太大了
B.
成功的获得不经过失败是不可能的
C.
经过失败就一定可以获得成功
D.
失败是成功之母,成功和失败相互依存
【简答题】如何进别亲蜇的雌雄？
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