题目内容

【单选题】Question 23:

A. They could not go on until the ringing stopped.
B. They could no longer concentrate on their task.
C. They grabbed the phone and called back right away.
D. They asked their experimenter to hang up the phone.

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【单选题】Question 24:

A rise in emotional problems.
B. A decline in sports activities.
C. A reduction in the amount of sleep.
D. A decline in academic performance.

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【单选题】Question 25:

A. Protect the eyesight of the younger generation.
B. Take effective measures to raise productivity.
C. Realize the disruptive effects of technology.
D. Ensure they have sufficient sleep every day.

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[音频]【单选题】Question 19 to 21 are based on the passage you have just heard. Question 19:

A. The function of the human immune system.
B. The cause of various auto-immune diseases.
C. The viruses that may infect the human immune system.
D. The change in people’s immune system as they get older.

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【单选题】Question 20:

A. Report their illnesses.
B. Offer blood samples.
C. Act as research assistants.
D. Help to interview patients.

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【单选题】Question 23:

A. They could not go on until the ringing stopped. B. They could no longer concentrate on their task. C. They grabbed the phone and called back right away. D. They asked their experimenter to hang up the phone.

【单选题】Question 24:

【单选题】Question 25:

[音频]【单选题】Question 19 to 21 are based on the passage you have just heard. Question 19:

【单选题】Question 20:

A. They could not go on until the ringing stopped.
B. They could no longer concentrate on their task.
C. They grabbed the phone and called back right away.
D. They asked their experimenter to hang up the phone.