第2题: [单项选择]女性,10岁,诊断为重症心肌炎,心脏听诊可能出现的特征性体征是() A. 开瓣音 B. S2固定分裂 C. 钟摆律 D. S1增强 E. P2增强 参考答案:C 答案解析:钟摆律是指当心尖部第一心音性质改变,音调类似第二心音,心率快,心室收缩与舒张时间几乎相等,两个心音强弱相等,间隔均匀一致,有如钟摆滴嗒声音,主要由于心肌有严重病变,心肌收缩无力。常见于心肌炎,急性心梗
第5题: [单项选择]The shop owner came up to see______. A. what was happened B. what was going on C. what the matter was D. what is the matter 参考答案:B 答案解析:[参考译文]店主过来看发生了什么。A项中不应用被动语态,C项应为what was the matter (正常语序),D项应用过去时,
第7题: [单项选择]There was a big hole in the road which __________ the traffic. A. set back B. stood back C. held up D. kept down 参考答案:C 答案解析:[译文]马路上有个大洞阻塞了交通。
[题解]动词短语辨义:set back“推迟,延缓,阻碍”;stand back“退后”;hold up“阻碍”,hold up the traffic为常用表达