Spring is an inviting season for outdoor activities. But be careful—the warm weather is also a hotbed for viruses(病毒) and disease.  
This March, the influenza(流行性感冒) A(H7N9) virus hit Shanghai, Anhui, Jiangsu and Zhejiang. It was reported that by April 11 at least 35 people had been infected (被感染的) with the H7N9 virus, and nine of them had died.
The influenza A (H7N9) virus is one type of influenza A H7 viruses. Influenza A H7 viruses normally spread among birds.
This is the first time human infections with H7N9 viruses have been reported in China. Earlier reports were about H5N1 and H1N1.
All the three viruses are influenza A viruses but they are not the same. H7N9 and H5N1 are animal influenza viruses that could infect people. However, H1N1 viruses can be divided into two groups. One group can normally infect people and the other normally infects animals. Also, H1N1 can spread from human to human, but H7N9 probably can’t, according to the World Health Organization (WHO).
Most people infected with H7N9 looked like they had the common flu. Some people had bad pneumonia(肺炎). They suffered from a fever, a cough and shortness of breath.
But don’t be afraid – it is not easy to be infected with the virus. One of the possible reasons is close contact with sick poultry (家禽) waste. People may also be infected through breath, according to National Health and Family Planning Commission.
Here are some tips from the WHO that can protect you from being infected.
Wash your hands with soap and running water before you eat, after you use the toilet, and after touching animals or animal waste.
When coughing or sneezing cover your mouth and nose with a mask(口罩)，tissue(纸巾) or a sleeve.
Get a good rest and do exercises, which will help make your body strong enough to stand up to the virus.
【小题1】What’s the name of the influenza virus that hit Shanghai, Anhui, Jiangsu and Zhejiang this March?

A young father was visiting an old neighbor. They were standing in the old man’s garden, and talking about children. The young man said,“How strict should parents be with their children?”

　  The old man pointed to（指着）a string (细绳) between a big strong tree and a thin young one.

　 “Please untie (解开) that string.” said the old man. “But first pull the string tight so that（以便于）the young tree is straight again.” The young man did so. He untied the string and only found that the young tree bent（弯）over to one side.

　 Then the old man said,“There, it is the same with children. You must be strict with them. But sometimes you must untie the string to see how they are getting on. If they are not yet able to stand alone，you must tie the string tight again. But when you find that they are ready to stand alone，you can take the string away.”

1.The story is about ____________.

　　    A. how to take care of young trees　   

B. how strict parents should be with their children

C. how the young father should get on with his old neighbor

2. The young man untied the string ________________.

　　    A. in order to throw it away   　　

B. so that both of the trees wouldn’t grow straight

　　    C. and found that the young tree bent over to one side

3.When could the string be taken away?

　　    A. When the old man left.　   　　

B. When the young man untied it next time.

　    　C. When the young tree grew strong enough.

4. At last the old man told the young man ________________.

　　    A. that he should be strict with his children if they could not 

stand alone

　　    B. that he should always be strict with his children

　　    C. that he should be hard on his children

5.We learn that the big strong tree and the thin young one are like _________.

A. the young father and the old neighbor    　　

B. parents and their children

　　     C. the old neighbor and the children of young father

A young father was visiting an old neighbor. They were standing in the old man’s garden, and talking about children. The young man said,“How strict should parents be with their children?”
　  The old man pointed to（指着）a string (细绳) between a big strong tree and a thin young one.
　 “Please untie (解开) that string.” said the old man. “But first pull the string tight so that（以便于）the young tree is straight again.” The young man did so. He untied the string and only found that the young tree bent（弯）over to one side.
　 Then the old man said,“There, it is the same with children. You must be strict with them. But sometimes you must untie the string to see how they are getting on. If they are not yet able to stand alone，you must tie the string tight again. But when you find that they are ready to stand alone，you can take the string away.”
【小题1】The story is about ____________.
　　    A. how to take care of young trees　   
B. how strict parents should be with their children
C. how the young father should get on with his old neighbor
【小题2】 The young man untied the string ________________.
　　    A. in order to throw it away  　　
B. so that both of the trees wouldn’t grow straight
　　    C. and found that the young tree bent over to one side
【小题3】When could the string be taken away?
　　    A. When the old man left.　  　　
B. When the young man untied it next time.
　   　C. When the young tree grew strong enough.
【小题4】 At last the old man told the young man ________________.
　　    A. that he should be strict with his children if they could not 
stand alone
　　    B. that he should always be strict with his children
　　    C. that he should be hard on his children
【小题5】We learn that the big strong tree and the thin young one are like _________.
A. the young father and the old neighbor   　　
B. parents and their children
　　     C. the old neighbor and the children of young father