题目内容

定时/计数器0中断服务程序的入口地址是0003H。

A. 对
B. 错

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单片机的地址总线由P2口和P3口构成。

A. 对
B. 错

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Section ADirections: In this section, you will hear three news reports. At the end of each news report, you will hear two or three questions. Both the news report and then questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A）, B), C) and D).Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 1 and 2 are based on the news report you have just heard.

A. Heavy floods.
B. Safety concerns.
C. Bad economy.
D. Workers’ strikes.

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Questions 1 and 2 are based on the news report you have just heard.

A. It is competitive with its numerous tourist destinations.
B. It provides many job opportunities for French people.
C. It is the biggest concern of the French government.
D. It plays an important role in the nation’s economy.

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Questions 3 and 4 are based on the news report you have just heard.

A. To carry out a scientific survey.
B. To establish a new research station.
C. To rescue two sick American workers.
D. To deliver urgent medical supplies.

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定时/计数器0中断服务程序的入口地址是0003H。

A. 对 B. 错

单片机的地址总线由P2口和P3口构成。

Questions 1 and 2 are based on the news report you have just heard.

Questions 3 and 4 are based on the news report you have just heard.

A. 对
B. 错