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问题 单项选择题

无符号二进制整数01001001转换成十进制整数是

A．69

B．71

C．73

D．75

答案

参考答案：C

解析：[分析] 01001001=0×27(+1×26+O×25+0× 24+1×23+0×22+0×21+1×20=73。

填空题

综合填空(词首字母已给出)。

     Everyone in the world has one n __1__ at least. And to each person his name is i __2__ because it is

  his own.

     Remember how you don't like it very m __3__ if people can't r __4__ your name, or pronounce it

 w __5__. Remember how you like to see it printed in the newspaper or even on the b __6__ at school.

 That's b __7__ it is your own and only you can have it.

     Of course, names aren't important themselves. There are no"good" names o __8__ "bad" names. But

  they are useful in our l __9__ .You don't have to go around shouting " Hey!You!"or"Hello!Girl with the

 red hair!"or "Thank you. Man who lives at the end of the street."

     Wouldn't it be f __10__. 
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选择题

在下列生活现象中，不是平移现象的是（    ）

A．列车在笔直的轨道上行驶

B．窗帘左右拉动

C．小亮荡秋千运动

D．电梯升降
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