船东保赔协会的每一个成员既是保险人又是被保险人，协会可以以盈利为目的。
参考答案：错
简要说明《智取威虎山》双线并行的复线结构的特点。
Thank you for all your hard work last week. I don’t think we ______ it without you.[ ]
A. could have managed
B. can manage
C. can have managed
D. could manage
