单项选择题

Today, housework has been made much easier by electrical ______.

A．facilities
B．appliances
C．instruments
D．equipment
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单项选择题
His opinion was quite ______ so we had to give up persuading him.
A．clear
B．apparent
C．evident
D．obvious
单项选择题
You may borrow the book ______ you do not lend it to anyone else.
A．in good condition
B．on condition that
C．in no condition
D．in condition
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