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 本题考查形近词辨析。四个选项均为以s开头的复数名词,A选项意为“沉积物;沉淀物”,B选项意为“环节;部分;段落”,C选项意为“物质,材料;实质,内容”,D选项意为“来源,产地”,选项之间的意义无交叉。题干替换词意为“沉淀物”,语句中its指代beach,沙滩的构成应该是某种物质,因此可以排除完全无关的B、D选项,再按照沙滩、坡度、海浪冲刷等提示的语境选定答案为A。
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