若已知[X]补=11101011，[y]补=01001010，则[x-y]补=(

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问题单项选择题

若已知[X]_补=11101011，[y]_补=01001010，则[x-y]_补=( )。

A．10100000
B．10100001
C．11011111
D．溢出

答案

参考答案：B

句型转换

按要求完成下列句子，每空一词。

1. I was doing my homework at eight yesterday. (对画线部分提问)

_____ _____ you _____ at eight yesterday?

2. I am very tired, and I can't walk. (改为同义句)

I am _____ tired _____walk.

3. They were playing soccer at this time yesterday. (改为否定句)

They _____ _____ soccer at this time yesterday.

4. Mary reads books every morning. (用all day yesterday改写)

Mary _____ _____ books all day yesterday.

5. I was playing computer games at 9 o'clock yesterday. (改为一般疑问句并作否定回答)

_____ you playing computer games at 9 o'clock yesterday?

No, I _____.

单项选择题 A1/A2型题

酒渣鼻患者表现为鼻尖部肥大，形成大小不等的紫红色结节状隆起，属于（）。

A.红斑期

B.丘疹脓疱期

C.鼻赘期

D.肿瘤期

E.斑疹期