2. 外语
  3. Salt spread on road in winter may cause all the following problems except ______. In the last sentence, "the amount" is referre

Salt spread on road in winter may cause all the following problems except ______. In the last sentence, "the amount" is referre

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问题 Salt spread on road in winter may cause all the following problems except ______.
In the last sentence, "the amount" is referred to that of______.
选项 A、CMA
B、salt
C、other alternatives
D、either of the above
答案B
解析 课文最后一段隐含了一层意思，即CMA正在研究之中，现阶段还只能盐，而盐又有多种害处，所以只好保持设备的完好，减少撒盐的数量。所以这时从上下文判断可知“数量”指的是盐的数量。
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