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【单选题】
It is naive to expect (hat any society can resolve all the social problems it is faced with_______.A.
for long
B.
in and out
C.
once for all
D.
by nature
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举一反三
【单选题】下列叙述中,正确的是______。
A.
CPU能直接读取硬盘上的数据
B.
CPU能直接存取内存储器上的数据
C.
CPU由存储器.运算器和控制器组成
D.
CPU主要用来存储程序和数据
【单选题】下列叙述中,正确的是()。
A.
计算机病毒只在可执行文件中传染
B.
计算机病毒主要通过读/写移动存储器或Internet网络进行传播
C.
只要删除所有感染了病毒的文件就可以彻底消除病毒
D.
计算机杀病毒软件可以查出和清除任意已知的和未知的计算机病毒
【单选题】听力原文：W: Where do you want me to drop you off? M: Right here is fine. Q: What will the man probably do? (15)
A.
Get out of the car.
B.
Pay the parking fine.
C.
Take his coat off.
D.
Make a right turn.
【单选题】用N A 表示阿伏加德罗常数．下列叙述不正确的是（ ）
A.
1mol苯乙烯中含有的C=C数为N A 个
B.
标准状况下，22.4L己烷中共价键数目为19N A
C.
92g乙醇与足量的金属钠反应，生成氢气的分子数为N A
D.
常温下，14g乙烯和丙烯的混合物中总原子数为3N A 个
【单选题】听力原文：W: Do you have an address where I can write to you? M: No, I'll be off camping in the mountains most of the time. But if you write to me at my uncle's house, he'll hold my mail until I get there....
A.
At the post office.
B.
At his home address.
C.
At his mountain cabin.
D.
At his uncle's address.
【单选题】一Do you know where Liberty Street is? 一 It's off Oak Street, near the park. —____. 一 I don't know exactly. Perhaps every five minutes or so.
A.
The park? Which one do you mean?
B.
Do you have any idea where Pine Street is?
C.
By the way, do you know how often the Number 5 bus runs normally?
【单选题】Where should you switch off your phone? [音频]
A.
Stop at the side of the road before answering the call.
B.
With a cell phone, they can keep in touch with friends, family and co-workers wherever they go.
C.
Switch off phones in meetings, movies, restaurants, and any other place where it might cause a disturbance.
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