During the SARS period, it is especially important to ventilate the room.A．dustB．cleanC．re

About the park, which of the following is INCORRECT？A．It rains a lot during spring.B．Cars

College is the most important period for the growth of young adults. It is time for colleg

What is the situation of your brain during the sleep before an exam？A．It is deeply relaxed

It is in February that came the historic visit of Nixon to China. During the visit Sino－Am

The American dream is most plausible（似乎可信的)during the periods of productivity and wea

During the SARS period it is especially important