[单项选择]It all started in 1950, when people began to build their houses on the ______ of their cities.
A. paradises
B. omissions
C. orchards
D. outskirts

[单项选择]It all started in 1950, when people began to build their houses on the______of their cities.
A. paradises
B. omissions
C. orchards
D. outskirts

[单项选择]The sit-in began Friday when authorities blocked her car on a bridge outside the capital as ______.


A. a group of supporters tried to talk with her
B. a group of people tried to support her
C. she tried to visit a group of supporters
D. she tried to visit the capital

[单项选择]The incident began when Russian armored car collided with （）
A. Russian service men
B. Russian soldiers
C. a civilian vehicle
D. a Chechen rebel ambush

[单项选择]The child began to cry when the nurse pricked a needle at the ______ of its finger.


A. end
B. tip
C. edge
D. point

[单项选择]

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. an unpleasant conversation
B. a challenge to interviewee's professional skills
C. an interference with interviewee's personal affairs
D. an interference with interviewee's hobby