Why is the swine flu very dangerous to humans？
A. Because it is fatal and has killed many people.
Because it has spread to many countries.
C. Because people know nothing about it.
D. Because people know no immunity to it.
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The part-time job really takes up most of my spare time.
A. transfers
B. occurs
C. occupies
D. spends
按照《招标公告发布暂行办法》的规定，原国家发展计划委员会经国务院授权，指定（）为发布依法必须招标项目的招标公告的媒介。
根据2002年我国投入产出简表，直接消耗系数矩阵为()
A) turnB) returnC) caseD) fact
A. turn
B. return
C. case
D. fact
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