第13题: [单项选择]______, the old professor is still trying to learn a foreign language. A. However he is old B. Old as he is C. He is so old D. As is he old 参考答案:B 答案解析:[分析] 本题测试点为让步状语从句。有时为了强调让步的意义,可用as引导让步分句,这时须将分句的补语或状语置于句首。例如:Tall as he was,he couldn't reach the ap