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听力原文：W: Jack, I expected to see you at Sam's birthday party yesterday but you were absent.
M: I had a date with my girlfriend. I have been terribly busy these days. You know, she is complaining.
Q: What do we know about the man？
(16)
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A．Take some extra time.B．Do a writing exercise.C．Do some work for another course..D．Wr
听力原文： The dog has often been an unselfish friend to man. It is always grateful to its master. It helps man in many ways. Certain breeds of dogs are used in criminal investigations. They are mined to sniff out drags and bombs. They help police to catch criminals.
The dogs that help in criminal investigations are trained at a school called the Military Dog Studies Branch of the U.S. Air Force in Lackland, Texas. The dogs to be trained are selected by an air force team. This team visits large cities across the country to buy the dogs. They may buy dogs from private citizens for up to $750 each. Some citizens freely give their dogs. The dogs selected must be healthy, brave and aggressive. They must be able to fight back if they are attacked. The dogs chosen are between the ages of one and three. They are given a medical examination when they arrive at the school. Their physical examination includes X-rays and heart tests. The trainee dogs undergo the first stage of training when they arrive in Lackland. This is an 11-week course for patrol duty. After this course, the best dogs are selected to go on another 9-week course. They learn drug-sniffing or bomb-sniffing. After this course, the dogs are ready for their jobs in the cities or on air force bases.
The training given to a drug-sniffing dog is different from that given to a bomb-sniffing dog. A drug-sniffing dog is trained to scratch and dig for the drags when he sniffs them. A bomb-sniffing dog sits down when he finds a bomb. That is the alert for hidden explosives.
(23)
听力原文：W: I heard the fire broke out at two in the morning.
M: That's right. And it took the firemen three hours to put it out.
Q: When was the fire put out？
(14)
听力原文： From this lookout we enjoy one of the most spectacular views of San Francisco. As you can see, the city rests on a series of hills varying in altitude from sea level to 938 feet. The first permanent settlement was made at this site in 1776. For 13 years the village had fewer than one hundred inhabitants. But in 1848. with the discovery of gold, the population grew to ten thousand. The same year the name was changed from Yerba Buea to San Francisco.
By 1862 telegraph communications linked San Francisco with eastern cities, and by 1869 the first transcontinental railroad connected the Pacific coast with the Atlantic seaboard. Today San Francisco has a population of almost three million. It is the financial center of the west, and serves as the terminus for trans-Pacific steamship lines and air traffic. The port of San Francisco, which is almost 18 miles long with 42 piers, handles between five and six million tons of cargo annually.
And now, if you will look to your right, you should just be able to see the east section of the Golden Gate Bridge. The bridge, which is more than one mile long, spans the harbor from San Francisco to Marin County and the Red Wood Highway. It was completed in 1937 at a cost of 32 million dollars and is still one of the largest suspension bridges in the world.
(26)
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