精选优质文档-倾情为你奉上大学英语四级模拟题四一 二三四五六试卷总得分核查人 Part OneReading Comprehension (210 = 20)Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.Passage OneAir pollution
