轻型井点管抽取地下水的原理是利用井点管内真空度，吸出地下水。（)

Although there is no cure for the common co1d , doctors believe that vitamins can help prevent them.

Is there any______they' 11 ever find a cure for the common cold？

A．prospective

B．prospect

C．prosperity

D．prosperous

A．aggravate

B．alleviate

C．medicate

D．bypass

The reason that scientists cannot cure a common cold is_____.

A．we don't know how we get cold

B．we aren't sure the exact kind of cold viruses

C．we don't know when we will catch cold

D．we aren't sure the exact scientific method

Which of the following is TRUE about medicines for cold？

A．They can cure common cold.

B．Doctors often discourage the patients from taking them.

C．About 51% of the patients take them.

D．Some Taiwanese take them unnecessarily.

Which of the following is TRUE about medicines for cold？

A．They can cure common cold.

B．Doctors often discourage the patients from taking them.

C．About 51% of the patients take them.

D．Some Taiwanese take them unnecessarily.

A．The man is suffering cold.

B．The woman has many tablets which can cure common cold in no time.

C．The man can take medicine according to the instructions.

D．The woman helps the man decide which medicine to buy.