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【单选题】
科技安全可分为( )、科技成果安全、科技人员安全、科技产品安全、科技设施安全、科技活动安全、科技应用安全等七个要素。A.
科技秘密安全
B.
科技研发安全
C.
科技输出安全
D.
科技输入安全
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反馈参考答案：
举一反三
【单选题】To create their voice sites, the illiterate may need the help of IBM and other groups in the following aspects EXCEPT______.
A.
offering them hosting computer servers
B.
providing them with templates
C.
teaching them voice extensible markup language
D.
finding a way to pay their phone bill
【单选题】【C2】
A.
needn't have been taught
B.
don't need to be taught
C.
must never have been taught
D.
may never have been taught
【单选题】3 You can’t imagine such a beautiful girl ______ say such rude words.
A.
might
B.
need
C.
should
D.
may
【单选题】—_______I return the books this week? —No, you _______. You can do that next week?
A.
Must; can’t
B.
May; needn’t
C.
Need; mustn’t
D.
Must; needn’t
【简答题】大约在何时我国已开始进行幻灯教学实验( )
【单选题】— ______ I finish the work today? — No, you needn't. [ ]
A.
Must
B.
May
C.
Can
D.
Need
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