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【单选题】
( )是保藏菌种效果最好的保藏方法。A.
斜面低温保藏法
B.
液体石蜡保藏法
C.
沙土管保藏法
D.
真空冷冻干燥保藏法
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举一反三
【单选题】______fathers are both doctors.
A.
Lily's and Lucy
B.
Lily's and Lucy's
C.
Lily and Lucy's
D.
Lily and Lucy
【单选题】The decision of the university to close the swimming pool at weekends____an angry reaction among students.
A.
created
B.
provoked
C.
stimulated
【简答题】The swimming pool at 7.30 every morning.
【简答题】阅读理解。 'What would you do if you were the mayor (市长) of your city?' We asked some students from different cities. Here's what they said: Deng Chuan,15, from Dazhou With the development of modern indust...
【单选题】We________ in the swimming pool at that time.
A.
were planning to swim
B.
are planning to swim
C.
were planning swimming
D.
are planning swimming
【单选题】We________ in the swimming pool at that time.
A.
are planning to swim
B.
were planning to swim
C.
are planning swimming
D.
were planning swimming
【单选题】We _____ in the swimming pool at that time .
A.
are planning to swim
B.
were plaaning to swim
C.
are planning swim
D.
were planning swim
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