—How _____ does she watch TV on Monday?
—45 minutes.[ ]
A. old
B. long
C. many
D. often
答案:B
—Hello! This is Henry Speaking. I’d like to speak to your father.
—Sorry, he has Shanghai.
A.been in
B.been to
C.gone to
D.come to
麻痹性贝类中毒是由( )引起的。
A.石房蛤毒素 B.肉毒毒素C.肠毒素 D.溶血毒素