20. This article is quite probably 　　　.

　 　 A. a piece of news　　　　　　 　　　　　　　　　　 B. a special science report

　 C. an introduction to a book　　 　　　　　　　　　　 D. a scientific fiction

19. Which of the following is NOT mentioned as a factor contributing to the extent to which a virus spreads?

　　　　 A. The strength of the virus.　　　　 　　　B. The strength of the opposition.

　　 C. The virus encounters the ease with which the virus can be transmitted.

　　 D. The immunity the virus can bring about.

18. What does the author say about the influenza B virus?

　　 A. B Virus is relatively stable and causes mild infections that do not spread far through the population.

B. B Virus is unstable, and is responsible for the epidemics that cause frequent concern.

C. B virus is extremely unstable and is responsible for some of the worst outbreaks of the 　disease.

　　　　 D. B virus has a very developed variability, and it affects only human beings.

17. Which of the following is the most appropriate title for the passage?

　　　　 A. Symptoms of Influenza.　　　　　　 B. Man Vs Influenza Virus.

　　 C. World Health Organization: Forefront against Influenza Virus.

　　 D. Variability of Influenza Virus.

16. The best heading for the passage is 　　　.

A. Phone Power　　　　 　　　　　　　　　　　　　　　 B. Kinds of Phone

C. How to Use Phones　　　 　　　　　　　　　　　　　　 D. Advantage of Phones

E

Although we already know a great deal about influenza, and although the World Health Organizations is constantly collecting detailed information from its chain of influenza reference laboratories throughout the world, it is extremely difficult for epidemiologists, who study infectious (传染的) diseases, to predict when and where the next flu epidemic(流感) will occur, and how serious it will be.

　 There are three kinds of influenza virus, known as A, B and C. Influenza C virus is relatively stable and causes mild infections that do not spread far through the population. The A and B types are unstable, and are responsible for the epidemics that cause frequent concern. Following any virus attack, the human body builds up antibodies which can be changed into immunity(免疫力)　　 to that strain of virus but a virus with the ability to change its character is able to bypass this protection. Variability is less developed in the influenza B virus, which affects only human beings. As influenza B virus may cause a widespread epidemic but will have little effect if introduced into the same community soon afterwards, since nearly everyone will have built up antibodies and will be immune. The influenza A virus, which affects animals also, is extremely unstable and is responsible for some of the worst outbreaks of the disease, such as the world epidemic, of 1918&1919, when about half the world’s population were infected and about twenty million people died, some from pneumonia caused by the virus itself and some from secondary complication caused by bacteria. Accurate prediction is difficult because of the complication of the factors. A particular virus may be related to one to which some of the population have partial involved immunity. The extent to which it will spread will depend on factors such as its own strength, or virulence, the ease with which it can be transmitted and the strength of the opposition in encounters. Scientists, however, have a reliable general picture of the world situation.

15．Which points do you think support the idea that phones improve people’s life?

　　 　a. Point 1　 b. Point 2　 c. Point 3　 d. Point 4　　 e. Point 5

A. c, b　　　 　　　　　　　　 B. a, e　　　 　　　　　　　　 C. a, c　　　 　　　　　　　 D.　 b, e

14. Which of the following best shows people’s attitude towards mobile phones?

A. Mobile phones help people deal with the emergency.

B. Mobile phones bring convenience as well as little secret to people.

C. Mobile phones are so important and should be encouraged.

D. Mobile phones are part of people’s life.

13. How do you understand “Point 1-The telephone creates the need to communicate?”

A. People don’t communicate without telephone.

B. People communicate because of the creating of the telephone.

C. People communicate more since telephone has been created.

D. People communicate more because of more traffic.

12. Which of the following is true according to the passage?

　 　 A. You have to pay to visit the museums.　

B. It’s very cheap to travel by taxi there.

C. You cannot find Chinese food there. 　　

D. The public transport is poor there.

D

　 When I asked my daughter which item she would keep: the phone, the car, the cooker, the computer, the TV, or her boyfriend, she said “the phone”. Personally, I could do without the phone entirely, which makes me unusual. Because the telephone is changing our lives more than any other piece of technology.

　 Point 1　 The telephone creates the need to communicate, in the same way that more roads create more traffic. My daughter comes home from school at 4:00 pm and then spends an hour on the phone talking to the very people she has been at school with all day. If the phone did not exist, would she have anything to talk about?

　 Point 2　 The mobile phone means that we are never alone. “The mobile saved my life,” says Crystal Johnstone. She had an accident in her Volvo on the A45 between Otley and Skipton. Trapped inside, she managed to make the call that brought the ambulance to her rescues.

　 Point 3　 The mobile removes our secret. It allows marketing manager of Haba Deutsch, Carl Nicolaisen, to ring his sales staff all round the world at any time of day to ask where they are, where they are going, and how their last meeting went.

　 Point 4　 The telephone separates us. Antomella Bramante in Rome says, “We worked in separate offices but I could see him through the window. It was easy to get his number. We were so near-but we didn’t meet for the first two weeks!”

　 Point 5　 The telephone allows us to reach out beyond our own lives. Today we can talk to several complete strangers at once on chat lines (at least my daughter does. I wouldn’t know what to talk about). We can talk across the world. We can even talk to astronauts (if you know any) while they’re space-walking. And, with the phone line hooked up to the computer, we can access 　to the Internet, the biggest library on Earth.

11.When is alcohol not able to get easily?

　　　　 A. At 9:00 p.m.　 B. At 10:00 p.m.　　 C. At 11:00 p.m.　 D. At 12:00p.m.