模拟试题

I love e-mail.Evidently，so do most other journalists.E-mail use has tripled during the past five years among some journalists.I know because I am part of a research team that surveyed 360 journalists ...

I love e-mail.Evidently，so do most other journalists.E-mail use has tripled during the past five years among some journalists.I know because I am part of a research team that surveyed 360 journalists ...

Is this happening in your neighborhood? Children，notebook computers stuck under their arms，await the yellow bus for the trip to middle schoo1.On the surface，the question of computers in schools is a n...

Admittedly， minor accidents and sup-ups continue to shake public confidence in nuclear power.Given the unquantifiable risks that nuclear power carries，it is only right that the industry be subjected t...

The introduction of non-indigenous“exotic”species is now seen as a major threat to biodiversity.In 1825，a particularly vigorous female clone of itadori (called Japanese knotweed)was introduced into Ho...

At an office in Virginia，in the east of the United States，a team of ten net savvy workersscours the web for sexual content，from basic sex education to sex acts.This“quality assurance‘’team is making s...

Scientists and members of the public are becoming increasingly concerned about the effects on mental， emotional and physical health of electro-magnetic fields emanating from power lines， mobile phones...

The entertainment industry and technology companies have been warring for years over the dazzling ability of computers and the Internet to copy and transmit music and movies.A crucial battle ended thi...

Is sitting in traffic as inevitable as death and taxes? Perhaps not. Many countries now have dedicated traffic-monitoring centres linked to networks of cameras and sensors. Throw in traffic-spotting a...

The stone age， The Iron Age. Entire epochs have been named for materials. So what to call the decades ahead? The choice will be tough. Welcome to the age of superstuff. Material science —— once the le...