单项选择题

According to Dr. Stuart Starr,______.

A．the other options proved totally unsuccessful
B．everyone knows how to deal with HIV virus effectively
C．the new therapy is but one among a number of options
D．the new approach might take the place of other therapies

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热门试题

单项选择题

The researchers found that______.

A．the gene therapy could be verified by animal experiments
B．the antitat gene may be artificially produced
C．antitat protein functions without causing any side-effects
D．antitat gene enhances the human immune system

单项选择题

What does the phrase to bust the trusts mean here

A．To break business monopolies.
B．To arrest law breakers.
C．To dismiss unnecessary workers.
D．To model government management.