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问题
判断题
为了充分合理地利用土壤中的养分,应采取轮作。( )
答案
参考答案:
对
选择题
The shopkeeper asks me ______ last year's cards. Because there is a discount ______ them.
A. to buy, on
B. buy, on
C. buying, in
D. to buy, for
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判断题
米制圆锥的号码是指圆锥的大端直径。( )
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