单项选择题

The gene therapy can curb HIV infection by______.

A．helping healthy cells withstand the ravages of HIV virus
B．completely stopping the infected cells from spreading
C．considerably inhibiting the tat gene from working
D．isolating HIV virus from the healthy cells

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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

单项选择题

What right did women win in government

A．To influence the members of the law-making body.
B．To vote for senators.
C．To vote a Bill through.
D．To make the Constitution.