题目

At times ,worrying is a normal, ________response to a difficult event or situation—a loved one being injured in an accident , for example. A．effective              B．individual             C．inevitable             D．unfavorable 答案：C 解析: A有效的；B个人的；C不可避免的，不可回避的；D不利的，不喜欢的；The reading room _____ very quiet. I enjoy reading books there. A. am B. is C. are D. be