I told your friend how to get to the hotel,but perhaps I ___ have driven her there.

A.could                                                           B.must

C.might                                                           D.should

Experts have been warning ___ of the health risks caused by passive smoking.

A.at a time                                                      B.at one time

C.for some time                                               D.for the time

Our listener question this week comes from Abdullahi Farah, who wants to know about the life and work of Doctor Benjamin Carson.

Doctor Carson is an internationally recognized doctor at Johns Hopkins Hospital in Baltimore, Maryland. He has been the director of Pediatric Neurosurgery at the hospital for twenty-five years. At the age of thirty-three, he became one of the youngest doctors in the United States to hold that position. And he was the first African-American to have that position at Johns Hopkins Hospital.

Ben Carson is known for his work as a brain surgeon for children. For example, in nineteen eighty-seven, he led a team of seventy doctors and nurses in an operation to separate two babies joined at the head. Earlier attempts by other surgeons on other babies had failed. Doctor Carson successfully performed the operation. Both babies were able to survive independently.

Doctor Carson has written four books. His first book, "Gifted Hands," tells the story of his life. Benjamin Carson was born in nineteen fifty-one in Detroit, Michigan.

As a boy, Ben was not a good student. In fact, he was the worst in his class. When his mother learned of his failing grades she asked her sons to read two library books every week. She limited the amount of time they watched television. And she told them to respect every person.

Ben Carson soon became the top student in his class. He went on to study at Yale University, one of the best universities in the country, and later to medical school at the University of Michigan.

Doctor Carson has received many awards and honors. Last year he received the nation's highest civilian honor. Former President George W. Bush presented Benjamin Carson with the Presidential Medal of Freedom at a ceremony at the White House.

The passage is probably taken from _____.

A. a radio      B. a magazine       C. TV       D. a paper

What does the word “surgeons” in paragraph 3 mean?

A. nurses       B. doctors      C. hospitals    D. points

Benjamin Carson’s change in study was largely because of ______

A. his hard work        B. his teacher

C. his mother           D. his father

What’s the aim to write the passage?

A. To call on us to learn from Benjamin Carson.

B. To praise Benjamin Carson for his achievements.

C. To show us how Benjamin Carson succeeded

D. To introduce Benjamin Carson’s life and work

对话填空(共10小题；每小题1分，满分10分)

请认真阅读下面对话，并根据各题所给首字母的提示，在答题卡上标有题号的横线上，写出一个英语单词的完整、正确形式，使对话通顺。

—She looks very happy.She_______have passed the exam.

—I guess so.It’s not difficult after all.

A.should                      B.could                        C.must                         D.might

Health problems are closely connected with bad eating habits and a _______ of exercise.

A.limit                         B.lack                          C.need                         D.demand

Having checked the doors were closed,and_______all the lights were off,the boy opened the door to his bedroom.

A.why                                                             B.that

C.when                                                           D.where

People try to avoid public transportation delays by using their own cars,and this ___ creates further problems.

A.in short                                                               B.in case

C.in doubt                                                              D.in turn

You will be successful in the interview _______ you have confidence.

A.before                       B.once                         C.until                         D.though

The practice of hanging clothes across the street is a common_____in many parts of the city.

A.look                                                            B.sign

C.sight                                                            D.appearance