Paragraph 4 shows that teaching classes in global English______.
A. excludes less talented people from universities
B. is harmful to mentality of young people
C. leads to deficiency of differences in individual thinking
D. can produce negative thinking behaviours
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It can be learned from the first paragraph that______.
ART is double-effected
B. HIV science is challenged
C. AIDS research is dishonest
D. AIDS denialism is prevalent
It can be inferred from the last paragraph that the first step in flourishing mail industry is______.
A. to upgrade the delivery service while cut the price down
B. to expand the privileges enjoyed by it
C. to open up mail-delivery market to more companies
D. to compute delivery prices against the labor costs
It can be inferred that the author holds a positive attitude towards______.
A. top scientific journals
B. filter then publish mechanism
C. studies from star scientists
D. open-access megajournals
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