题目内容

What a good listener is able to do is to process what he hears on the basis of the context ______.

A. it occurring in
B. occurred in it
C. occurring in it
D. it occurs in

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When ______ through a telescope, the sun appears darker near the edge.

A. seen
B. see
C. to see
D. seeing

While _______ the sun, the satellite has sent more than four billion bits of information back to earth.

A. orbited
B. being orbited
C. having orbited
D. orbiting

SAMBA服务器的默认安全级别是()。

A. share
B. user
C. server
D. domain

在Samba“验证模式”中有()、()、()、()和()五种模式供选择。

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