What does the word "urban" (Line 2, Para. 3) mean？（）
A. Of the city.
B. Out of work.
C. In a bad condition.
D. Of enormous size.
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How can the users of terminals without processing capability acquire the necessary information？（）
A. They can simply use a keyboard or a mouse.
B. They should use a modem to maintain the host system.
C. They should connect their computer to a satellite system.
D. They can access its base through the programs on the system.
This ATM has been out of service for a few days. It should ______ last week.
A. fix
B. be fixed
C. have fixed
D. have been fixed
下列不属于环境保护计划中的水污染治理范围的是( )。
A. 长江上游
B. 黄河中游
C. 松花江流域
D. 长江下游
Large numbers of farmers have poured into towns because（）.
A. they can hardly support their families on farms
B. they are unhappy with their life in the country
C. the rural areas are too crowded with people
D. they hope to have their own business
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