Internet是属( )类型的拓扑结构。
A. 端到端
B. 环状
C. 网状
D. 分层
生产经营单位的主要负责人依照生产经营单位相关责任规定受刑事处罚或者撤职处分的，自刑罚执行完毕或者受处分之日起，( )年内不得担任任何生产经营单位的主要负责人。
A. 2
B. 3
C. 5
D. 10
According to the author, really good science （）
A. would surprise the brightest minds of the 18th century Englightenment
B. will produce results which cannot be foreseen
C. will help people to make the right choice in advance
D. will bring about disturbing results
As indicated in the passage, being free to act on one's opinion （）
A. means that one can ignore other people's criticism
B. means that one can impose his preferences on others
C. doesn't mean that one has the right to do things at will
D. doesn't mean that one has the right to charge others without evidence
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