47.What is one of the advantages of biometric technology?

　　A.It better protects people’s privacy.

　　B.It helps people follow a healthy life style.

　　C.It is cheaper than traditional methods.

　　D.It identifies people more accurately.

　　48.The author used the health insurance case mainly to ______

　　A.illustrate the use of the technology

　　B.give suggestions on buying insurance

　　C.draw attention to the problem of the technology

　　D.emphasize the importance of healthy diet

　　49.In which of the following situations is biometric technology NOT used?

　　A.Computers are switched on by a voice order.

　　B.Doctors diagnose disease through patients’ voice.

　　C.Museum doors are controlled by palm scanner.

　　D.The police identify criminals through fingerprints.

　　50.Which word would you use to describe the author’s tone in this passage?

　　A.Supportive B.Objective

　　C.Critical D.Indifferent

　　Part IV Cloze Test (15 minutes, 10 points)

　　Directions: There are 10 blanks in the following passage. For each numbered blank, there are 4 choices marked A, B, C, and D. Choose the best one and mark your answer on the ANSWER SHEET with a single line through the center.

　　Colleges in the US have added a new subject, “green chemistry”, to their curriculum (课程) today. “Green chemistry __51__ how we can develop products that won’t __52__ the environment,” explains Paul Anastas, director of Yale University’s Center for Green Chemistry and Green Engineering. It opened at the beginning of this year. The American Chemical Society, __53__ approves more than 600 college chemistry programs, only lists about a dozen that teach green chemistry. But that __54__ is growing.

　　Cambridge College in Massachusetts is offering “an introduction to green chemistry” course this fall and is offering the nation’s first bachelor’s and master’s __55__ in green chemistry. The program will have classes in environmental science and even environmental __56__ and policy. These subjects are not __57__ taught to chemistry majors.

　　Employers __58__ the introduction of green chemistry. Businesses are increasingly seeking graduates __59__ backgrounds in the subject because it can help them make or save money in the development and manufacturing of products. “We need people who can not only understand their place __60__ , but also understand the worldwide perspective,” said Adam Peterson, a chemicals division manager at Dow Corning Corp.

　　51.A.looks on B.looks in C.looks at D.looks after

　　52.A.injure B.distress C.wound D.hurt

　　53.A.which B.that C.such D.thus

　　54.A.size B.number C.amount D.quantity

　　55.A.titles B.degrees C.status D.ranks

　　56.A.law B.act C.bill D.treaty

　　57.A.controversially B.eventually C.gradually D.traditionally

　　58.A.dislike B.ignore C.welcome D.enjoy

　　59.A.on B.in C.with D.from

　　60.A.in a row B.in person C.in common D.in a chain