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问题 单项选择题

在历史上中 * * 党曾提出：①讲学习、讲政治、讲正气；②知识青年到农村去；③枪杆子里面出 * * ；④科学技术是第一生产力。按时间先后顺序排列正确的是（）。

A.②③④①

B.③②④①

C.②①③④

D.③②①④

答案

参考答案：B

单项选择题

Currently the Pentium chip or (71) , made by (72) , is the most common CPU though there are many other companies that produce processors for personal computers. One example is the CPU made by Motorola which is used in Apple computers. With faster processors the clock speed becomes more important. Compared to some of the first computers which operated at below 30 megahertz ( (73) ) the Pentium chips began at 75 megahertz in the late 1990g. As of mid 2003 speeds now exceed 3000 + megahertz or 3 gigahertz (check your local computer store for the latest speed) . It depends on the (74) that the chip is housed in, or the (75) , as to whether you are able to upgrade to a faster chip. The motherboard contains the circuitry and connections that allow the various component to communicate with each other.

A. cycle boardB. circulate board C. circuit boardD. circle board
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单项选择题

Speaker A: Excuse me, sir. Can you tell me where the bus stop for Hyde Park is
Speaker B: ().

A. Of course. I’m glad to tell you where it is.

B. Yes. Turn right and walk two blocks and you’ll find a bus stop sign.

C. Sorry, I’m too busy to lead you to the nearest bus stop.

D. Just a moment. I have to figure out the best way to get there.
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