第13题:[单选题] 肾素-血管紧张素系统活动增强时( ) A. 醛固酮释放减少 B. 静脉回心血量减少 C. 体循环平均充盈压减低 D. 交感神经末梢释放递质减少 E. 肾脏排钠量减少 参考答案:E
第14题: [单项选择]I have kept that picture ______ I can see it clearly, as it always reminds me of my university days. A. which B. where C. whether D. when 参考答案:B 答案解析:[解析] 本题考查的是状语从句的关系词。根据句型keep sth. in some place,可知应该使用关系副词where来引导地点状语从句,因此选项B为正确答案。 [避错指南] 选项A(w
第32题: [单项选择]______ the train accident was a miracle. A. The child would survive B. Why the child survived C. That the child survived D. When the child survived 参考答案:C 答案解析:根据四项选择及空当后内容可推知题意:小孩在火车事故中幸免于难;这真是奇迹。据此题意,was前为一主语从句。A无引导词,故排除。B和D虽有引导词,但语义不通。C为正确选择。that引导主语从句,在从句中