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【单选题】
Fill in your sex, please.A.
put in Male under the word “sex”, isn’t it?
B.
put in Woman under the word “sex”, isn’t it?
C.
put in Man under the word “sex”, isn’t it?
D.
put in Boy under the word “sex”, isn’t it?
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A.
many
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most
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generous investors
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A.
if
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【单选题】The hardware makers ______.
A.
have obtained enormous profits from the operation
B.
have invested heavily on the research of new products
C.
have helped doctors and hospitals gain more experience
D.
have successfully proved the effectiveness of their products
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