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[单选题]
The plants can ___ carbon dioxide into oxygen.
A.change
B.turn
C.convert
D.become
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题目内容
（请给出正确答案）
A.change
B.turn
C.convert
D.become
答案
更多“The plants can ___ carbon dioxide into oxygen.”相关的问题
第1题
Most remains of animals and plants on land can not survive because of ______.
A．bad weather
B．sun-ray
C．floods
D．decay
第2题
There could be life on the Mars in the future if_____.
A．it supported life in the past
B．certain gases are used to cool the planet
C．the atmosphere can be heated enough to grow simple plants
D．the planet's volcanoes become as active as they were in the past
第3题
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.
第4题
The order of coming into being on the island is______.
A．soil, plants and animals
B．soil, little creatures and plants
C．soil, birds and plants
D．soil, human beings and animals
第5题
A.palms and roses
B.willows and sunflowers
C.pines and orchids
D.eucalypts and wattles
第6题
A.错误
B.正确
第9题
A．they are eager to build new nuclear power plants
B．they have totally forgotten the Chernobyl accident 25 years ago
C．they have improved their nuclear power plants
D．they want energy independence
第10题
The aim of voyages Maury encouraged in the 1840s was ______.
A．to make some sound experiments in the oceans
B．to collect samples of sea plants and animals
C．to estimate the length of cable that was to be made
D．to measure the depths of two oceans
第11题
In the second paragraph, the author mainly discusses ______.
A．the nuclear accidents in Japan last March
B．nuclear power policies in Germany
C．German attitude towards nuclear power
D．the safety levels of nuclear power plants in Germany
