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【单选题】
在长期的作物种植顺序中，换茬轮作顺序的基本依据是？A.
作物的遗传特性
B.
作物的生态适应性
C.
作物的茬口特性
D.
作物的耐连作性
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反馈参考答案：
举一反三
【简答题】资格审查包括哪些内容？
【简答题】Feeling exhausted and hopeless, I began walking to my car. Every step seemed tiring, and every step was another to survive. As I looked up into the sky I thought about how my grandmother had left me, ...
【单选题】— Must I do the math exercise step by step? — Of course. You can never be _____ careful with that. [ ]
A.
too
B.
enough
C.
so
D.
very
【简答题】保密资格审查包括____审查和____审查。
【单选题】Hardly ________ the plane when I was warmly welcomed by a text from the lovable Mikey．
A.
did I step off
B.
I stepped off
C.
had I stepped off
D.
I had stepped off
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