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【单选题】
Hardly ______________ when it began to rain.A.
had the game begun
B.
began the game
C.
the game had begun
D.
did the game begin
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举一反三
【单选题】Mr Duffy raised his eyes from the paper and gazed out of his window on the cheerless evening landscape. The river lay quiet beside the empty distillery and from time to time a light appeared in some h...
A.
disgust
B.
guilt
C.
grief
D.
compassion
【简答题】比较农业技术、物理防治技术、生物防治技术、化学防治技术各有哪些优缺点?