患者男性,60岁。刺激性呛咳,咳痰,且带少量血丝。确诊为支气管肺癌。可以肯定其发病与下列哪一因素无关
A. 饮食
B. 长期吸烟
C. 经常接触过敏物质
D. 空气污染
E. 慢性肺疾患
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It’s one thing to communicate with your friends on the phone, but it is quite another to_____a nice letter explaining the same ideas.
A. convey
B. distribute
C. inquire
D. compose
I have searched all the book stores in this town. The book you asked for is not_____.
A. tedious
B. vivid
C. available
D. sufficient
A railway ticket should indicate the place of departure as well as the_____of the trip.
A. arrival
B. image
C. destination
D. sequence
“You_____call me uncle because I am about the same age as your father,” said the visitor to the boy.
A. more or less
B. may just as well
C. sort of
D. off and on