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A. Computer programs allow spammers to send hundreds of millions of e-mails almost instantly。
B. This question is troubling for individuals and companies as well.
C. But now it seems that every time I check my e-mail， I have an endless series of adver-tisements and other correspondence that do not interest me at all.
D. Spammers should be fined， and perhaps Sent to prison if they continue to disturb people.
E. And their employees are thus unable to communicate effectively.
F. Spamming is more serious in China than in America.

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我国社会保障政策与法规体系中，最完善健全的是社会优抚政策法规。()

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One cannot live__________. 查看材料

A. in your body
B. without water
C. before long
D. for a change
E. on a busy day
F. to your weight

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Motoring Technology
1.2 million road deaths worldwide occur each year， plus a further 50 million injuries. To reduce car crash rate， much research now is focused on safety and new fuels——though some electric vehicle and biofuel research aims at going faster.
Travelling at ~peed has always been dangerous. One advanced area of research in motoring safety is the use of digital in-car assistants. They can ensure you don"t miss important road signs or .fall asleep. Most crashes result from human and not mechanical faults.
Some safety developments aim to improve your vision. Radar can spot obstacles in fog， while other technology "sees through" big vehicles blocking your view.
And improvements to seat belts， pedal（脚踏） Controls and tyres are making driving smoot-her and safer. The colour of a car has been found to be linked with safety， as have， less surpris-ingly， size and shape.
， But whatever is in the fuel tank， you don"t want a thief in the driving seat and there have been many innovations （创新）. Satellite tracking and remote communications can also come into play if you crash， automatically calling for help.
Accidents cause many traffic jams， but there .are more subtle interplays between vehicles that can cause jams even on a clear but busy road. Such jams can be analyzed using statistical toolso Robotic drivers could be programmed to make traffic flow smoothly and will perhaps one day be everyone"s personal chauffeur （司机）， but their latest efforts suggest that won"t be soon.
To reduce car crash rate， many scientists are working hard to 查看材料

A. design fully automatic cars
B. develop faster electric vehicles
C. analyze road deaths occurring worldwide each year
D. improve the safety of cars and develop new fuels

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A. weight
B. form
C. risk
D. work

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我国社会保障政策与法规体系中，最完善健全的是社会优抚政策法规。()

One cannot live__________. 查看材料

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