题目内容

This novel ________ by William Shakespeare.

A. makes
B. was written
C. is writing
D. carefully done

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Microsoft Corporation ________ in 1975 by Bill Gates.

A. was created
B. is setting up
C. found
D. is organized

The house ________regulary by that old woman.

A. was broken
B. was cleaning
C. is cleaned
D. decorated

运输层提供端到端的通信服务,所谓端指的是()。

A. 主机
B. 网卡
C. 应用进程
D. 物理接口

3.1949年我国人均国民收入只有 ( )

A. 27美元
B. 37美元
C. 47美元
D. 57美元

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