A. like B. through C. consists of A. what substances your tap water【T1】______ B. while the water streams【T2】______pipeli

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问题 A. like     B. through     C. consists of
A. what substances your tap water【T1】______
B. while the water streams【T2】______pipelines
C.【T3】______every other substance
    Drinking water,【T4】______. contains small amounts of bacteria. Most of these bacteria are common ones and they are generally not harmful. Chlorine(氯)is usually added to drinking water to prevent bacterial growth【T5】______. This is why drinking water also contains small amount of chlorine.
    Water mostly consists of minerals and other inorganic compounds, such as calcium. If you want to find out【T6】______and whether it is totally safe to drink, you can have a specialized agency check it out for you.
【T6】

选项 A、 
B、 
C、 

答案A

解析 find out为动词,从语法角度来讲,后面需要名词性成分来做宾语。故A选项符合语法要求。这里的大意是:如果你想知道你的自来水是由什么物质组成的,是否安全,你可以找到一个特殊机构来检验。因此本题选A。
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