题目内容

Bill Clinton was the president of the United States from 1992 to 2000, ______ the US economy enjoyed a rapid growth.

A. during which time
B. for which time
C. during whose time
D. by that time

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Ask your father for some money, ______ you will be unable to buy a bicycle before September.

A. or
B. and
C. then
D. so

主张教学的任务在于训练学生的官能,训练学生思维形式的教育理论,被称为()

A. 传统教育论
B. 现代教育论
C. 失职教育论
D. 形式教育论

Li Ming is said ______ in Beijing, but I don't know which hotel he stays in.

A. to be on a business trip
B. to have been on a business trip
C. to on a business trip
D. to being on a business

PC中既使用ROM,也使用SRAM和DRAM。下面关于ROM、SRAM和DRAM的叙述中,正确的是( )。

A. SRAM和DRAM都是RAM,芯片掉电后,存放在SRAM和DRAM芯片中的内容都会丢失
B. PC中CMOS RAM中的信息,在PC关机后一般也会丢失
C. 由于SRAM的速度比DRAM的慢,因此,在PC中,DRAM主要用作高速缓冲存储器(Cach而内存条则由SRAM组成
D. ROM和SRAM及DRAM都是半导体存储器,因此,现常用ROM代替RAM来存放原来存放在CMOS RAM中的信息

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