[单项选择]Compared mathematically to smoking and driving, almost everything else seems relatively risk-free, ______ almost nothing seems worth regulation.
A. yet
B. since
C. so
D. even though

[单项选择]Compared mathematically to smoking and driving, almost everything else seems relatively risk-free, ______ almost nothing seems worth regulation.
A. yet
B. since
C. so
D. even though

[单项选择]Smoking does great harm to our health.（）is smoking allowed in public places.
A. In no time
B. At a time
C. At all times
D. At no time

[单项选择]Smoking does great harm to 0ur health（）is smoking allowed in public places．
A. In no time
B. At a time
C. At all times
D. At no time

[单项选择]The book called How to Stop Smoking
A. cost the writer a lot of time to read.
B. was not taken seriously by the writer.
C. warned the reader of the risk of lung cancer.
D. left the writer in confusion,

[单项选择]Smoking is prohibited in public places．
A. 公共场合不准吸烟。
B. 公共场合不能吸烟。
C. 在公共场合，不准吸烟。
D. 吸烟在公共场合被禁止。

[单项选择]The number of articles published on smoking amazing.
A. is
B. are
C. were
D. have been

[单项选择]执行下列程序段后
　　MOV AL，87
　　MOV CL， 4
　　MOV AH， AL
　　AND AL，0FH
　　OR AL， 30H
　　SHR AH，CL
　　OR AH，30H
　　则AX=( )H
A. 3537
B. 3735
C. 0705
D. 0507

[单项选择]The number of articles published on smoking amazing.（）
A. is
B. are
C. were
D. have been

[单项选择]

A
Cigarette smoking is believed by most research workers in this field to be an important factor in the development of cancer of the lungs and the throat and is believed to be related to cancer of the bladder(膀胱) and the oral cavity(口腔). Male cigarette smokers have a higher death rate from disease than non-smoking males.
Female smokers are thought to be less affected because they do not breathe in the smoke so deeply. The majority of physicians and researchers consider these relationships proved to their satisfaction and say. "Give up smoking. If you don’t smoke, don’t start. "Some physicians and research workers though their small number is dwindling(减少)even further are less sure of the effect of cigarette smoking on health. They consider the increase in repiratory (呼吸的)diseases and various forms of cancer may possibly be explained by other factors in the complex human environment-atmospheric (大气的) pollution, increased nervous stress,
A. lung
B. mouth
C. heart
D. eye

[单项选择]Smoking is not permitted in the office.


A. probable
B. possible
C. admitted
D. allowed

[单项选择]The writer decided to quit smoking partly because
A. she could not afford any more cigarettes,
B. her doctor had advised her to do so.
C. her brother had given up smoking.
D. she had started to cough.

[单项选择]设AL=98H，执行SAR AL，1后，AL中的内容是(　　　)
A. 30H
B. 4CH
C. 98H
D. 0CCH