1999年12月大学英语四级听力真题丨答案及下载_大学英语听力

　　D) Because it improves your problem solving strategies.(A)

　　17. A) Piano music could interfere with your reasoning ability.

　　B) The effects of music do not last long.

　　C) The more you listen to music, the higher your test scores will be.

　　D) Music, whether classical or rock, helps improve your memory.(B)

　　Passage Three

　　Questions 18 to 20 are based on the passage you have just heard.

　　18. A) To drive the car automatically.

　　B) To measure the drivers pulse.

　　C) To prevent car accidents.

　　D) To monitor the drivers health.(C)

　　19. A) It sends out signals for help.

　　B) It sounds an alarm to warn the driver.

　　C) It takes over the driving immediately.

　　D) It stops the car automatically.(B)

　　20. A) It monitors the signals transmitted from the drivers brain.

　　B) It can measure the drivers alcohol level in the blood.

　　C) It can quicken the drivers response to emergencies.

　　D) It bases its analysis on the drivers heartbeat.(D)

Part I

1. B

2. D

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