第18题: [单项选择]You will be late ______ you leave immediately. A. unless B. until C. if D. or 参考答案:A 答案解析:本题考查连词辨析。可转化为If you don't leave immediately,you will be late。B、D句意不对,且or表转折,A意为“除非”。句意为:除非你立即走,否则你就会
第19题: [单项选择]下列哪项符合一度窦房阻滞的心电图特征() A. 一般无法诊断 B. 窦性P波形态不同 C. PP间期逐渐缩短 D. P波有脱漏现象 E. PR间期延长 参考答案:A
第31题: [单项选择]Numerous parallels exist between Ernest Hemingway's life and the lives of his characters. A. studies B. problems C. similarities D. biases 参考答案:C