听从“服药期间食物中不放盐”的建议可减轻一些轻微的不良反应，例如 （） A.轻度液体潴留

During the developing of the vaccine, the biggest problem may probably be ______.

A．the combination of bird flu virus with human flu virus.

B．the virus mutates in a short period.

C．the vaccines are ineffective against the virus.

D．the time is pressing for the scientists.

A．He may not have enough time to cook.

B．He may spend more money on food next semester.

C．He may gain weight if he does his own cooking.

D．He may not enjoy working.

A.in short

B.in advance

C.in time

D.in schedule

In a big university, what may several thousand students be taking at the same time？

A．Arts and sciences.

B．Geometry.

C．A compulsory course.

D．A course in poultry marketing.

The most crucial time for project risk assessment is ().

A.when a problem surfaces

B.during the planning phase

C.during the close-out phase

D.after the project schedule has been published

A、take one’s time

B、take time off

C、a race against time

D、big time

听力原文：M: My roommate and I have decided to do our own cooking next semester.

W: Then, I hope you'll have a lighter schedule than this term.

Q: What problem does the woman think the man may have？

(17)

A．He may not have enough time to cook.

B．He may spend more money on food next semester.

C．He may gain weight if he does his own cooking.

D．He may not enjoy cooking.