题目内容
Their plan was built on ________ and couldn't be tested by the practical life.
- A.sand
- B.sands
- C.sandy
- D.sanding
A
句意:他们的计划不切实际,经不起实际生活的检验。built on sand固定结构“不稳固的”。
句意:他们的计划不切实际,经不起实际生活的检验。built on sand固定结构“不稳固的”。
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