Tell him he should stop () and get some sleep.
A. worry
B. to worry
C. worrying
D. from worrying
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Serv-U中可以限制用户名上传信息占用存储空间的选项是（）
A. 用户配额选项
B. 域配额选项
C. 用户上传下载率选项
D. 域上传下载率选项
According to the 28th annual survey of college freshmen conducted by the American Council on Education UCLA, ______.
A. more than half of college freshmen planned to seek advanced degrees
B. men, for the first time in the history of the survey, were more likely than women to pursue ail major types of advanced degrees
C. in 1993, more men than women sought such degrees
D. both A and C
关于监理工作应注意的事项叙述有误的是( )。
A. 制造现场的监造检验和见证，尽量结合供货方工厂实际生产过程进行，不应影响正常的生产进度(不包括发现重大问题时的停工检验)
B. 监理应按时参加合同规定的检查和试验
C. 供货方供应的所有合同设备、部件(包括分包与外购部分)，在生产过程中都需进行严格的检验和试验
D. 供货方供应的所有合同设备、部件，在出厂前不需进行部套或整机总装试验
Microwaves are ______.
A. absolutely safe at low levels
B. very efficient for cooking
C. cancer-causing iii people with weak eyes
D. completely understood by scientists
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