1. (2019·中山模拟) 阅读理解

It is easy for people to have a flu in spring. We should learn something to protect ourselves from it.
▲Typeset of flu virus: Type A flu: This virus includes H1N1 and sub-type H3N2. Type B flu: This virus can cause seasonal epidemics. Type C flu: This virus causes epidemics that are generally at a stable level in different years. Type D flu: This virus can infect pigs and cattle but not human beings.	▲Spreading: ◆Two main sources of seasonal flu epidemics(流行):flu patients and infected(被感染的)people in sick. ◆The airway is the main route of spreading. ◆Common latent (潜伏)period:1 to 4 days, 2days on average. ◆Direct and indirect connect with the mouth , nose and eyes.
▲People who are easy to have a flu: Children, the elder, pregnant women, medical workers, patients with some diseases such as breathing, diabetes and heart disease.	▲Good personal healthy care: ◆Wash hands frequently; ◆Avoid crowed in flu season. ◆Cover mouth and nose and don't touch them after the beginning of the flu: ◆Reduce contacts with people who are easy to have flu; ◆Wear masks if you should go to the hospital.

1. （1） The number of flu viruses that the article tells us is       .

   A . 5 B . 4 C . 3 D . 6
3. （2） Mr.Li works in a middle school . There are some people who have a flu this month. So he should keep himself from flu EXCEPT      .

   A . keep away from the flu patients B . exercise more every day C . open the window as often as possible D . talk to sick people without a mask
5. （3） From the passage, we know that          .

   A . it's easy for the medical workers to have a flu B . the flu will last for only 1 day C . if your classmates have a flu, you have to cover your mouth and nose D . children aren't easy to have a flu
7. （4） According to the passage, which of the ways are NOT right to keep yourself from flu?

   A . If someone has a flu, he should keep clean and wash hands as often as possible. B . In flu season, you'd better not go to the crowded places. C . Parents and children shouldn't wear face masks when they go to see the doctors. D . You'd better not stay with your best friends who have a flu on weekends.
9. （5） You can most probably find this passage in      .

   A . an advertisement B . a poster C . a book D . a health magazine