2. 外语
  3. This substance reacts ______ as fast as the other one.

This substance reacts ______ as fast as the other one.

admin2013-12-08  26
问题 This substance reacts ______ as fast as the other one.
选项 A、a tenth
B、tenth
C、ten
D、one-tenth
答案D
解析 本题为固定搭配题。题干意为“这种物质起化学反应的速度比另外一种慢9倍”。one—tenth as fast as…“比……慢9倍；速度相当于……的十分之一”，这是倍数表达法之一。所以答案为D)。
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