单项选择题

According to the passage,______.

A．more and more women are infected by HIV virus
B．women have more chances of being infected by HIV virus
C．the aim of the study in this passage is to understand how the virus works
D．many medical studies didn't answer any questions

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单项选择题

A．Earning a LivingB．Correct Attitude on Job-huntingC．How to Choose a JobD．What Can a Good Job Offer

A．Earning a Living
B．Correct Attitude on Job-hunting
C．How to Choose a Job
D．What Can a Good Job Offer

单项选择题

It can be learned from the passage that______.

A．it will be difficult for scientists to develop a vaccine for women
B．HIV infects women in the same way with men
C．most women have contracted a variety of HIV from several men
D．it will be easy to develop a vaccine for men