3.A.good　　　　　　　　　 B.curious　　　　　　　 C.poor　　　　　　　　 D.urgent

2.A.quickly　　　　　　　 B.easily　　　　　　　　 C.roughly　　　　　 D.decidedly

1.A.applying　　　　　　 B.doing　　　　　　　　 C.offering　　　　　 D.getting

3. D.细节题。根据 And in isolated arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes 可知北极地区探险者是因为与外界接触后才得感冒的，故选 D.

2. C.细节题。 根据 One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times， and this makes it easier for cold viruses to be passed on 可知人们得感冒不是因为喜欢呆在家里，而是因为经常呆在一起病毒更容易感染，故选 C.

1. B.细节题。根据由第 2 段的两个例子、第 3 段的 1 个例子和第 4 段的两个例子可知 B 为正确选项。

5. The passage mainly discusses _______.

　　 A. the experiments on the common cold

　　 B. the fallacy about the common cold

　　 C. the reason and the way people catch colds

　　 D. the continued spread of common colds

　　 「答案解析」本文通过大量事例证明感冒不是由寒冷引起的， 而是由病毒感染引起的。

4. Volunteers taking part in the experiments in the Common Cold Research Unit _______.

　　 A. suffered a lot　　　

　　 B. never caught colds

　　 C. often caught colds　　

　　 D. became very strong