22. 听题干 锁定正确答案
A. To solve word search puzzles.
B. To send smartphone messages.
C. To test their eyesight using a phone app.
D. To install some audio equipment in a lab.
题目:What were the college students in both groups required to do in the study?
A. To solve word search puzzles.
23. 听题干 锁定正确答案
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.
题目:What do we learn about many of the students in the second test group after the phone ring?
B. They could no longer concentrate on their task.
24. 听题干 锁定正确答案
A. A rise In emotional problems.
B. A decline in sports activities.
C. A reduction in the amount of sleep.
D. A decline in academuc perforance.
题目:According to the passage, what is the most dramatic impact of smart phone use?
C. A reduction in the amount of sleep.
25. 听题干 锁定正确答案
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 suffcient sleep every day.
题目:What does the speaker suggest people do?
C. Realize the disruptive effects of technology.