下列选项中，哪一项与病毒不同之处在于，没有自我复制功能的恶意程序（)。A．木马B．宿主计算机蠕虫C．

There is such a rapid increase in the number of private cars as to ______ a gas shortage.

A．causing

B．cause

C．caused

D．being caused

With a sharp increase in the number of college graduates, ____________(就业市场上出现了剧烈的竞争)

The number of private cars in our town (keep) ______ growing all these years.

The number of private cars in our town has kept (grow) ______ all these years.

The increase in the number of cars may give rise to air pollution.

A．invent

B．cause

C．lead

D．decrease

A. the carelessness of the drivers

B. increase in the number of cars stolen

C. non-professional thieves

D. lack of parking space

E. safe parking spots

F. professional thieves

Most car thefts should be blamed on ______.

A．stiff

B．stricken

C．stolen

D．stable