单项选择题

A computer can store ______ information because it has a very large memory.

A．a great many
B．vast amounts of
C．a large number of
D．a number of
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单项选择题
You would ______ many difficulties as well as great risk to undertake this program right now
A．face with
B．encounter
C．come across
D．confront with
单项选择题
Even the slightest the progress of a child is ______ of parents' attention and appreciation.
A．worth
B．worthwhile
C．worthless
D．worthy
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