课时跟踪检测 选修八 Unit 2 Cloning
(计时：45分钟)
Ⅰ.词汇知识
1．(2013·湖北卷)People complain that decisions to approve or deny a permit are often ________ rather than based on fixed criteria.
A. appropriate B. conscious
C. arbitrary D. controversial
答案与解析 C 句意：人们抱怨说，赞成或否定的决定经常是任意的，而不是以固定的标准为基础。appropriate“合适的”； conscious“意识到的；清醒的”； arbitrary“任意的”； controversial“有争议的”。
2．(2013·山东模拟卷四)The problem has been ________ me for weeks. I really can't find the solution to it and I have come to turn to you for help.
A. interrupting B. bothering
C. striking D. pushing
答案与解析 B 句意：那个问题已经困扰我几个星期了。我真的不能找到解决办法了并且我来这向你请求帮忙。bother “困扰”； interrupt “打断”； strike “击打”； push“推进”。根据句意选择B项。
