单项选择题

There is no electricity again. Has the ______ blown then

A．fuse
B．plug
C．wire
D．circuit
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单项选择题
Our country was founded on the lofty principles of freedom and justice for all. Our lofty principles ought to be ______.
A．faced up to
B．looked up to
C．lived up to
D．made up to
单项选择题
The mountainous areas of the country are ______ populated.
A．infrequently
B．sparsely
C．slightly
D．loosely
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