单项选择题

The medicine has many functions, ______ are unknown to us.

A．some of which
B．that some of them
C．of which some of them
D．which of them
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单项选择题
I remember ______ me to help him.
A．telling
B．you to tell
C．you telling
D．to tell
单项选择题
They insist that a computer ______ only what our thinking humans have planned.
A．have done
B．do
C．be doing
D．does
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