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【单选题】
糖尿病失明的主要原因是A.
视网膜病变
B.
青光眼
C.
角膜炎
D.
黄斑病
E.
结膜炎
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举一反三
【单选题】The boys enjoy ________ football very much. [ ]
A.
Play
B.
to play
C.
and play
D.
playing
【单选题】Li Lei can play the guitar ________. [ ]
A.
very good
B.
very nice
C.
very well
D.
very fantastic
【简答题】The play, _________ , is very wonderful: there are many interesting characters in it. A. out of the question B. on the whole C. out of question D. under no c...
【简答题】请简述Python中以下划线开头的变量名的特点。
【简答题】Translation :食物是维持生命不可或缺的。
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