Colleague A: Cigarette？ Colleague B: No, thank you. I've given up smoking. Haven't had one
A. Well, you don't mind if I have one, do you？
B. OK. Go ahead and do it.
C. All tight. Take care!
D. Sorry, have another one then.
查看答案
It can be inferred from the passage that the drop in Amtrak rider ship was due to the fact
A. trains were not suitable for short distance passenger transportation
B. trains were not the fastest and most convenient form. of transportation
C. trains were not as fast and convenient as they used to be
D. trains could not compete with planes in terms of luxury and convenience
What should a tenant do if he is worded about the security of his home？
A. Fit new locks on all the doors.
B. Discuss the matter with the owner.
Complain to the police.
D. Increase his own insurance.
心电图示：R-R间期规整，QRS波群宽度0.11秒，可见F波，心室率170次/分，见于E．
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