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A.正确
B.错误
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更多“Could you give us some advices…”相关的问题
A.has left
B.left
C.leaves
D.had left
A.was found
B.was founded
C.was appeared
D.was discovered
"What's wrong with this girl？" He said, "Why doesn't she hurry up？" He moved forward and placed his bag on the counter, hoping to check in first. He was in a hurry to get a good seat.
Maria was very angry, but she was very polite. And in her best English she said, "Why are you so upset？ There are enough seats for everyone on the plane. If you are in such a hurry, why can't you give me a hand with my luggage？"
The man was surprised to hear Maria speak English. He quickly picked up her luggage and stepped back. Everyone was looking at him with disapproval.
(5)、The author mentioned Maria's age at the beginning of the story in order to show that _____ .
A.she was young but behaved properly
B.she would not have left home alone
C.everyone around her was wrong
D.it was not good that nobody offered to help her
A.I’d love so
B.I will like to
C.I would like that
D.I’d love to
B.What are you doing？
C.Sure. Sorry to disturb you.
D.No, I don’t think so.
B.I’m ill, so I shouldn’t go out.
C.No, I really don’t like being with you.
D.No, I already have plans.
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.
A.look in
B.look into
C.look on
D.look up to
A.shadow
B.shade
C.shallow
D.shell
A、keep
B、break
C、hit
D、give
