For well over a thousand years，smallpox was a disease that everyone feared. The disease killed

century. By the end of the eighteenth century，smallpox was responsible for about one in ten deaths around the world. Those who survived the disease were left with ugly scars on their skin.

It had long been well known among farmers that people who worked with cows seldom caught smallpox;instead,they often caught a similar but much milder disease called cowpox(牛痘) .A British doctor called Jenner was extremely interested in this，and so he studied cowpox. He believed that,by vaccinating (接种疫苗) people with the disease, he could protect them against the much worse disease smallpox. In 1796，he vaccinated a boy with cowpox and,two months later,with smallpox. The boy did not get smallpox. In the next two years, Jenner vaccinated several children in the same way，and none of them got the disease.

News of the success of Jenner' s work soon spread. Vaccination soon became a common method to protect people against other diseases caused by virus，such as rabies(狂犬病) ，and vaccines were sent across the world to the United States and India.

It took nearly two centuries to achieve Jenner ，s dream of getting free of smallpox from the

whole world. In 1967, the world Health Organization (WHO )  started a great vaccination program， and the last known case of smallpox was recorded in Somalia in 1977. The story of vaccinations does not end there, however. There are many other diseases that kill more and more people every year. Besides,many new diseases are being discovered. The challenge for medical researchers will,therefore，probably continue for several more centuries.

(   ) 4. Smallpox was so serious that        by the end of 18th century.

     A.   its death rate was up to ten percent

    B.   those who caught it were certain to die

    C.   one in ten people in the world died of smallpox

    D.   one in ten deaths in the world was caused by smallpox

(   ) 5. Edward Jenner discovered that vaccination with cowpox could         .

     A.  make smallpox much milder

    B.  stop people from getting smallpox

    C.  protect people against any disease

    D.  prevent people's scars after smallpox

(   ) 6. Which of the following statements is NOT true?

     A.  The first experiment with cowpox was made by a British doctor.

    B.  After 1977 smallpox disappeared around the world according to WHO.

      C. Vaccination had existed among ordinary fanners before being discovered.

    D.  Vaccination can be used to protect people in the world against not only smallpox. 

(   ) 7. The author of the passage thinks that             .

     A.   vaccinations bring many new problems

    B.   vaccinations end the spread of diseases

    C.   there is a long way to go to fight against diseases

    D.   there is a long way to go to discover new diseases

 According to a new study by Israel researchers from University of Haifa，posting blogs to express feelings and emotions is therapeutic for children aged 13―17. Psychology professors Meyran Boniel-Nissim and Azy Barak have found that a teenager writing a publicly-viewed blog on the Internet is more effective for relieving stress rather than keeping a private diary. The study，published in the journal Psychological Services，supports that expressing oneself through writing can be therapeutic.

To conduct the research, Boniel-Nissim and Barak randomly selected Israeli high school students who displayed a certain degree of stress. The teenagers were then divided into six groups. Two groups were asked to post blogs twice a week about their social difficulties,but only one of them was asked to open the blogs for comments. The next set of groups were also asked to blog twice a week to post about whatever was going on in their mind，again with one group allowing comments.

The two control groups were asked to keep an old-fashioned private diary.

and social position. From the research, they saw that the greatest improvement in mood was with the bloggers who wrote about their personal troubles and allowed people to interact with their posts. The research also noted that the comments were mostly positive and constructive. Boniel-Nissim and Barak said that the commentators' interactions helped the bloggers while they were distressed. The conclusive research noted that expressing yourself on the Internet not only let others know what was personally going on with you,but also helped you figure out some things about yourself too.

(   ) 1. The underlined word "therapeutic" in Paragraph 1 can be best explained as "        ".

     A.  attractive to teens

    B.  addictive for children

    C.  making people feel calm and relaxed

    D.  able to be easily hurt

(   ) 2. The research shows that teens benefit most when         .

     A.  they blog and allow comments

    B.  they discuss their study on the blog

    C.  they keep a traditional diary

    D.  they comment on someone else' s blog

(   ) 3. We can infer from the last paragraph that blogging         .

     A.   should not always be opened to comments

    B.   is most useful in improving one,s mood

    C.   is not an effective way to express one, s feelings

    D.   can help students see their problems better

10. He knocked me down when I was crossing the road,             and I forgave him. (apologize)

在我过马路的时候，他把我撞倒了，为此他向我道歉了并且我也原谅了他。

9. The evidence           can prove his guilty，so we must find it out quickly. (refer)

在信中提到的证据可以证实他是有罪的，因此我们一定要尽快把它找出来。

8. There are various kinds of animals in Australia,             can，t be found in any other country. (many)

澳大利亚有很多种类的动物，其中有很多在别的国家都是找不到的。

7.            in my last letter，we can make our dreams come true by working hard. ( mention)

正如我在上封信里提到的，我们可以通过努力工作来实现我们的梦想。

6. At the foot of the mountain                  ，where he was born twenty years ago. (lie)

在山脚下有一座村子，他二十年前出生于那里。

5. It is recommended that he               on printing and order a few product catalogues. (buy)

有人推荐他购买几本关于印刷的书并订购几本产品目录。

4. The old man                the countryside found it dif- ficult to talk with people in the city. ( used)

习惯于住在乡下的那位老人觉得很难和城里人交流。

3. Recently I           work that I have lost a lot of time to take care of my children. (occupy)

最近我太忙于工作，以至于我失去了很多照看孩子的时间。