第11题: [单项选择]Automation threatens mankind with an increased number of ______ hours. A. useless B. active C. complex D. idle 参考答案:D 答案解析:(idle空闲的,闲着的)。句意为:自动化对人类造成威胁,因为闲暇的时间越来越多。A.useless无用的;B.active积极的;C.complex复杂的。
第20题: [单项选择]下颌骨易发生骨折的薄弱部位不包括 A. 正中联合 B. 颏孔区 C. 下颌角 D. 乙状切迹 E. 髁状突颈部 参考答案:D
第21题: [单项选择]Which of the following ideas is the passage mainly about.() A. The writer knew a lot about history. B. The writer's viewpoint on history. C. History is hard to understand. D. History books are useless. 参考答案:B 答案解析: