第3题: [单项选择]If {{U}}being carried{{/U}} out successfully, the plan will completely change the traffic conditions in the city. A. carried B. is carried C. having been carried D. to carry 参考答案:A 答案解析:[分析] 结构应用
本句考察的是省略的用法:当状语从句的主语和主句的主语相同时,状语从句可以用分词短语作状语。本句完整的句子应为“if it is carried out successful
第29题: [单项选择]What is the main topic of the conversation[A] The conversion of volcanic waste to fertilizer.[B] The menace of currently dormant volcanoes around Mount Saint Helena.[C] The eruption of Mount Saint Helena and its effects on the environment. 参考答案:C 答案解析:[听力原文]16-20
M: The volcanic ash from the eruption of Mount Saint Helens certainly caused a lot of d