2. 外语
  3. Concrete, which is used in a wide range in modern society, ______ of cement, sand and gravel mixed with water.

Concrete, which is used in a wide range in modern society, ______ of cement, sand and gravel mixed with water.

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问题 Concrete, which is used in a wide range in modern society, ______ of cement, sand and gravel mixed with water.
选项 A、consists
B、composes
C、concentrates
D、comprises
答案A
解析 题意是：在现代社会，大范围使用的混凝土由水泥、沙子和沙砾混上水______。 [A]consists“由…构成，包含有”，consist of“组成”，为固定搭配，指整体由几个部分或几种材料构成，符合题意。[B]composes“组成，构成”，主语为组成前的各个部分，宾语为组成后的一个整体;[C]concentrates“集中，聚集”；[D]comprises“构成，组成”，为及物动词，直接跟宾语。因此，这三项都不符合题意。
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大学英语四级

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