The degree of a beach’s downward slope depends on its composition of deposits as well as on the action of waves across its surfa

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问题 The degree of a beach’s downward slope depends on its composition of deposits as well as on the action of waves across its surface.

选项 A、sediments
B、segments
C、substances
D、sources

答案A

解析 海滩的向下倾斜度取决于沉积物的成分以及海浪对其表面的作用。A项sediments“沉积物,沉淀物”,B项segments“部分,片段”,C项substances“物质;实质,本质”,D项sources“来源,源头”。
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