单项选择题

Fibers of hair and wool are not continuous and must normally be spun into thread ______ woven into textile fabrics.

A．as are they
B．when to be
C．that they are
D．if they are to be
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单项选择题
He rushed into the room, his face ______ with sweat.
A．dripping
B．dripped
C．being dripped
D．was dripping
单项选择题
If you keep getting wrong numbers, your phone could be ______ .
A．deceptive
B．ineffective
C．deficient
D．defective
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