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[单选题]
It is called solar cooker, a newly designed cooking device and there are many kinds o
A.convenient
B.available
C.useful
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.convenient
B.available
C.useful
如果结果不匹配，请 联系老师 获取答案
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Joachim's vision is based on an idea called pleaching (编织), where tree branches are grown so that they naturally weave together. Since the growth patterns of trees are {effected; affected; attempted} by wind and sunlight, it may be possible to control the way a tree develops.
These Fabricated Tree House Habitats would use trees grown into shapes as housing. One of the {purposes; disadvantages; advantages} of these designs is that trees would not have to be cut down for lumber.
"A 100 percent treehouse would take years to create," Joachim said.{Depending on; Judging by; Protected from} the climate, a house could take anywhere from 5 to 30 years to grow. Fortunately, there's a way to speed up the process. Joachim suggests including ecological materials such as sod (草皮), grasses and living branches in the housing designs. "This material would be able to move as the house grows," Joachim said.
A home would become an actual ecosystem, a community of plants, animals, and bacteria working together. The trees would also give off water vapor that would assist in {cleaning; heating; cooling} the homes. Solar panels and wind would help provide energy. The tree homes might even have soil pockets, where plants could grow from the structure itself.
Work has already begun on Joachim's first design—a house made from 50 percent recycled and 50 percent living things. Joachim is confident about the {happiness; benefit; importance} of his work, as he uses natural products without destroying nature.
"The environment and its study are very important. We need to respect nature, don't take it for granted," he said.
Compared with coal, bad effects of solar energy are relatively（), but it costs more at present to utilize it.
A.tender
B.wild
C.mild
D.evident
A.Beginning of Summer
B.Summer Solstice
C.Great Heat
D.Grain in Ear
It is known that solar power can ______ electric energy.
A．convert into
B．convert to
C．be converted into
D．be converted to
A、disrespectful
B、casual
C、efficient
D、punctual
A．When
B．If
C．Now that
D．Just as
