第15题: [单项选择]They have learned about()in recent years. A. several hundreds English words B. hundreds of English words C. hundred of English words D. several hundred English words 参考答案:B
A. Though for children written B. Thought it written for C. It was written for children D. Though written for children 参考答案:D 答案解析:语法结构题。此题考查过去分词作状语。[A]项语序不对,[B]项缺少系动词,[C]项为一个独立的分句,因缺乏表示与另一个分句的关系的关联词,所以不能选用。[D]项为过去分词短语,由表示让步关系的关联词t