单项选择 容易0.94 引用1 组卷229
Before the introduction of the seed drill, the convenient tool, a common ________ was to plant seeds by hand.
A.server | B.device | C.item | D.practice |
21-22高一下·北京·期中
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Smog can be dangerous because it causes breathing problems and ______.
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Before the introduction of the seed drill, the convenient tool, a common ________ was to plant seeds by hand.
A.server | B.device | C.item | D.practice |
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