第17题: [单项选择]慢性肺脓肿是指() A. 病程超过1个月 B. 病程超过2个月 C. 病程超过3个月 D. 病程超过4个月 E. 病程超过6个月 参考答案:C 答案解析:急性肺脓肿经充分引流,脓液由气道排出,可使病变逐渐吸收,脓腔缩小甚至消失或仅剩下少量纤维瘢痕。炎症迁徙超过3个月以上不愈者,称为慢性肺脓肿。
第31题: [单项选择]The boy was wounded ______ his left leg ______ a stone. A. in; with B. in; by C. on; with D. on; by 参考答案:A 答案解析:[解题指要] 该题测试介词用法。中文“腿上有伤”、“衣服上有洞”、“墙上有窗”,英文要说 a wound in the leg,a hole in the coat,a window in the w