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
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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
Toward the prospect of nuclear industry 26 years ago, The Economists attitude can be said
A. objective
B. optimistic
C. pessimistic
D. biased
In the second paragraph, the author discusses______.
A. the overall economic picture of the publishing industry
B. the paradoxical situation faced by scientific journals
C. the different outlooks of newspapers and scientific journals
D. the favorable economic situation for scientific publishers
The last paragraph implies that mitochondrial transplantation______.
A. is controversial but worth pursuing
B. is technically feasible but morally unacceptable
C. is a technique with little bad consequences
D. is a long-awaited answer to mitochondrial diseases
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