To obtain a satisfactory result, one must apply two ______ of paint on a clean surface.

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问题 To obtain a satisfactory result, one must apply two ______ of paint on a clean surface.

选项 A、coats
B、levels
C、times
D、courses

答案A

解析 句意:为获得一个满意的结果,你必须在一个干净的表面上涂两层油漆。 coat意为“覆盖物,层”;level意为“(建筑物)楼层”;times意为“次,回”;courses意为“(一层)砖面;一排”。
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