2013同等学力申硕英语每日一练 1月17日

　　Text Completion

　　Directions: In this part there are three short texts. For each text , you should first fill in the blank in the choices A, B, C (and D) with the best answer provided in the rectangle. Then, complete the text itself by filling in each o f the blanks with the completed A, or B, or C (or D).Write your answer on the Answer sheet

　　A. When large concentrations of these substances are (1)______

　　B. ( 2) _____ energy generation

　　C. that are (3) _____in air

　　The main sources of air pollution are the industries, agriculture and traffic, (4)_____.During combustion processes and other production processes air pollutants are emitted. Some of these substances are not directly damaging to air quality, but will form harmful air pollutants by reactions with other substances (5)______.

　　Examples of large-scale air pollutants are volatile (挥发性的) organic compounds and small dust particles. ( 6) _____,this negatively affects environment, materials and public health.

　　答案解析：

　　这是一篇小短文，内容非常简单1---3题不用看全文内容，仅凭语法和搭配知识就可以完成。

　　第1题填emitted，因为这里需要一个过去分词表示被动语态。

　　第2题填as well as，因为energy generation前面列举的都是名词，as well as表示并列关系。

　　第3题填present，因为前面是系动词are，这里要用形容词做表语。

　　从上下文内容看第4题答案是B;第5题答案是C;第6题答案是A。