Personal interviewing is most effective when all the people to be interviewed are located in a relatively small geographical area. Otherwise, the time and expense spent in travelling from one person to another makes this type of interviewing economically impractical. Personal inter viewing is usually used when the information needed is too complex to be gathered by another technique. For example, a problem being studied may require the interviewer to probe beyond the more superficial answers that might be obtained with another method.
It is sometimes assumed that personal interviewing is the most accurate of all survey re search techniques. Although personal interviewing may be accurate in many cases, human errors may prevent a researcher from obtaining valid results. Questions perceived by the interview wee as an invasion of privacy or threatening in any way will probably produce false of partially true answers. Also, since the interviewer must interpret the respo
A. personal interviewing is most effective
B. personal interviewing is economically impractical
C. personal interviewing is the only technique to get information
D. telephone interviewing may not be used
提示：Alice问Bill现在感觉怎样，今天早上是否看过病。Bill说他睡一觉病就好了。Alice说 Bill家不远处有一家诊所，要他去看好病，以便参加Linda明天的聚会。
Alice: Hello, Bill. It’s Alice. (51)
Bill: Not too well, I’m afraid.
Alice: (52)
Bill: No, I didn’t. I think I just need some sleep (53) .
Alice: Listen, why don’t you go to see the doctor There is a walk-in clinic on Lincoln Street. (54) .
Bill: I don’t want to go to see the doctor for a common cold. I know I’ll be all right after a night’s
sleep.
Alice: But do you still remember we have a surprise party for Linda tomorrow Are you sure (55)
Bill: Oh, yes. You are right. I guess I should see a doctor. Talk to you later.
Alice: Take care.
Passage Five 5
A young girl and a man were recently found murdered in a parked car in a Boston suburb. The police found no clue (线索) in the car. Then they found a witness who had seen a car pass by the murdered couple’s car. He said it was a 1950 or 1951 Chevrolet (雪佛莱牌汽车).
Ordinarily, searching through the files for owners of elderly Chevies would have been an impossibly difficult task because there were two and a half million such cars. In this case, however, the police had a powerful tool--the computer.
The Boston Registry of Motor Vehicles programmed its computer to screen all 1950 and 1951 Chevrolets within a fifteen-mile radius (半径) of the suburb--the area in which the police believed the murderer was most likely to be found. Within minutes, the computer uncovered one thousand of the wanted cars. A few hours of careful hand screening turned up a 1950 Chevrolet owner who lived close to the scene of the crime and who had received many traf
A. with the help of a Chevrolet owner
B. with the help of computers
C. by a witness
D. in a car
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