题目内容
（请给出正确答案）
Environmental _______ has increased dramatically over the pastdecade.
A) conception
B) idea
C) awareness
D) emotion
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更多“Environmental _______ has incr…”相关的问题
Most environmental problems exist because adequate measures for preventing them ______ taken in the past.
A．was not
B．were not being
C．were not
D．was no to be
Adraw attention to
Bput down
Cdepend on
Dhave an effect on
B.managerial accounting and financial accounting
C.managerial accounting and environmental accounting
D.financial accounting and tax accounting systems
A. but
B. although
C. unless
D. lest
A.The ozone hole over Antarctica
B.Low population
C.Favourable geographic features
D.A late development of industry
What is the passage mainly about？
A．What businesses can do to become more profitable.
B．Why business is seen as the environmental bad guy.
C．Business strategies for international companies today.
D．How businesses can be both "green" and profitable.
Why were cracks in old houses not a big concern？
A．Because indoor cleanness was not emphasized.
B．Because energy used to be inexpensive.
C．Because environmental protection was given top priority.
D．Because they were technically unavoidable.
A．Travelers cleared up rubbish on mountains.
B．Children planted trees.
C．Government officials made speeches in public to encourage people to do something for the earth.
D．Artists and musicians gave shows to support the environmental group's work.
将英语短文译为中文
3 Self-Powered Nanotech (10分)
Nanosize machines need still tinier power plants
By Zhong Lin Wang
The watchmaker in the 1920s who devised the self-winding wristwatch was on to a great idea: mechanically harvesting energy from the wearer’s moving arm and putting it to work rewinding the watch spring.
Today we are beginning to create extremely small energy harvesters that can supply electrical power to the tiny world of nanoscale devices, where things are measured in billionths of a meter. We call these power plants nanogenerators. The ability to make power on a minuscule scale allows us to think of implantable biosensors that can continuously monitor a patient’s blood glucose level, or autonomous strain sensors for structures such as bridges, or environmental sensors for detecting toxins — all running without the need for replacement batteries. Energy sources are desperately needed for nanorobotics, microelectromechanical systems (MEMS), homeland security and even portable personal electronics. It is hard to imagine all the uses such infinitesimal generators may eventually find.
In Brief
★Nanotechnology has huge potential — but those minuscule devices will need a power source that is better than a battery.
★ Waste energy, in the form. of vibrations or even the human pulse, could provide sufficient power to run such tiny gadgets.
★ Arrays of piezoelectric nanowires could capture and transmit that waste energy to nanodevices.
★ Medical devices will likely be a major application. A pacemaker’s battery could be charged so it would not need replacing, or implanted wireless nanosensors could monitor blood glucose for diabetics.
