单项选择题

Questions 23 to 25 are based on the conversation you have just heard.

A. They will visit Betty.
B. They will ask for help from their professor.
C. They will call for help from Betty.
D. They will have a break.
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单项选择题
A. John had given up his old job before he went to Canada.B. John’s old job has been taken over by someone else.C. John doesn’t want to go back to his old job.D. John has taken his old job back.
A. John had given up his old job before he went to Canada.
B. John’s old job has been taken over by someone else.
C. John doesn’t want to go back to his old job.
D. John has taken his old job back.
单项选择题
A. It’s hard to define how much effect it has on people.B. People don’t have the equipment to measure it.C. It does not leave any trace once the noise disappears.D. It’s hard to measure it.
A. It’s hard to define how much effect it has on people.
B. People don’t have the equipment to measure it.
C. It does not leave any trace once the noise disappears.
D. It’s hard to measure it.
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