单项选择题

A．The experiment will take a long time.
B．The students should count their time in the lab.
C．Dr. Walters teaches biology in the afternoon.
D．Biology lab is open one hour every afternoon.
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多项选择题
I’’d rather have a room of my own，__________(不论大小，总比跟别人共有一间来得好)．
I’’d rather have a room of my own，__________(不论大小，总比跟别人共有一间来得好)．
单项选择题
The passage mentions all of the following statements except that ______.
A．various functions are involved in the work of a public relations practitioner
B．the public’’ relations activities play a very important role in the political life
C．the entertainment world attaches great importance to public relations activities
D．the field of public relations may cover promotional activities and press conference
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