[单项选择]All children（）a loud laugh when their father told them the funny story.
A. let off
B. let down
C. let out
D. let up

[单项选择]All students （） a loud laugh when professor Henry Mitchel told them the joke.
A. let off
B. let down
C. let out
D. let up

[单项选择]He can always ______ me laugh even when I'm sad.
A. make
B. leave
C. turn
D. keep

[单项选择]When Sagan told the director about what the dolphin had done, the director ______.

[单项选择] A sonic boom is a very loud noise that occurs when an aircraft passes through the sound barrier-------travels faster than the speed of sound
A. and
B. so
C. whether
D. as

[单项选择]When the stranger told the writer that only two people in the country had their own tennis courts, He meant that ______.


A. his friend was a famous person
B. his friend was an excellent tennis player
C. the writer could find his friend
D. the writer would happen to know his friend

[单项选择]It was no surprise when we were told that our grandfather had passed away.（　）
A. survived
B. gone out
C. died
D. gone on a trip

[单项选择]When he was told that he scored 58 in the final examination, he was in a comfort of remorse.（）
A. a distress
B. a suffering
C. an agony
D. a misery

[单项选择]The （）story that Tina told made all of us cry
A. heartbroken
B. heartbreak
C. heartbreaking
D. heartbroke

[单项选择]Hardly ______ when a loud explosion was heard.
A. the train had started
B. the train had been started
C. had the train started
D. did the train start

[单项选择]Most people in the business world were told, when they began their careers, not to let their resume （　）one page.
A. expand
B. exceed
C. expose
D. extend

[单项选择]The court was told the house was unoccupied when the pair ______ but the police received information that a burglary was in progress.
A. broke out
B. broke through
C. broke in
D. broke down

[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