题目内容：
The author suggests that Biogen's Alzheimer's drug __
A．should be disapproved for its failed trial A．should be disapproved for its failed trial
A．should be disapproved for its failed trial.
B．deserves an approval for its big unmet need
B．deserves an approval for its big unmet need
B．deserves an approval for its big unmet need.
C．shifts the focus of FDA to improving public health
C．shifts the focus of FDA to improving public health
C．shifts the focus of FDA to improving public health.
D．provides a chance for FDA to raise drug approval standards
D．provides a chance for FDA to raise drug approval standards
D．provides a chance for FDA to raise drug approval standards.
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答案解析：