E. The discovery may also shed light on the little-understood aging process. Since the drugs act on the neuromuscular systems of both humans and worms, the findings hint at a link between neural activity and aging。

　　F. Unlike vertebrates, the worms are ideal subjects for the study of aging because of their short life spans, which last only a couple of weeks in a laboratory. The worm is well known in genetics, and the worm’s genome has been sequenced。

　　G. Use of this drug has been permitted by law since 1998 and wider use is now expected as a result of the studies. “We can clearly link this drug with human aging, but we still need to find proof, says Kornfeld optimistically. ”

　　PartⅢ Translation

　　Directions: Translate the following passage into Chinese and put your translation on the ANSWER SHEET。(15points)

　　Last Sunday，China’s central bank governor Zhou Xiaochuan said if necessary，the nation will consider widening the yuan’s trading band。

　　But any change in the yuan’s floating band will depend on the global economic situation and it’s not the only tool the country would use to make its currency more flexible，Zhou said at the Group of 20 meeting in Cape Town，South Africa。

　　China widened the yuan’s daily trading band against the U.S. dollar from plus or minus 0. 3 percent to 0. 5 percent in May。

　　However，market observers said some commercial banks are ordered by the central bank to hand in reserve requirements in foreign currencies next week，which will translate into demand for the U.S. dollar. This will somehow help slow down RMB’S appreciation against the greenback in the coming few days。

　　PartⅣ Writing

　　Section A

　　Directions: Write a letter of application for the position an Director of a Computer-Aided Learning Center. Try to make the letter interesting and show that you have enthusiasm for the job. Also state the qualifications you have for the job and your work experience. (10points)

　　Section B

　　Directions：Study the following pie chart carefully and write an essay based on the tips:

　　(1) Describe the picture。

　　(2) Show your understanding of the symbolic meaning of the picture below。

　　(3) Give your opinions or advice。

　　You should write at least 150 words neatly on ANSWER SHEET. (15points)