单项选择题

It was now clear that no such weapons were manufactured and none been found.()

A．was found
B．were founded
C．has been found
D．have been founded

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单项选择题

I always think of books with unutterable feelings, being deeply indebted to them, as I am, for the warmth they have brought me.()

A．preferred
B．mixed
C．profound
D．dissatisfied

单项选择题

At first I guessed it was an airplane, but I soon changed my mind because it remained static instead of moving like a plane.()

A．stationary
B．statutory
C．stationery
D．statuesque

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