单项选择题

In the experiment , the researcher placed a rat in a maze, ___ it was presented with different smells to see if it can resist the distraction and get to the exit.

A.what
B.that
C.where
D.which
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单项选择题
Will you please tell me ___ right now?
A.whattimebe
B.whattimeisit
C.whatisthetime
D.whattimeitis
单项选择题
The Internet is extensively utilized by students for______information to undertake their course-related tasks and assignments.
A.maintaining
B.evaluating
C.retaining
D.retrieving
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