In a binary plant, the heat of the geothermal water can be converted into
A.the energy to turn a turbine
B.impermeable rock
C.one or two separators
D.turbine operator
E.little or no water
F.hot springs
A.the energy to turn a turbine
B.impermeable rock
C.one or two separators
D.turbine operator
E.little or no water
F.hot springs
第2题
To avoid the mistakes of our forefathers, the author suggests that______.
A.we plant more trees
B.we return to nature
C.natural sciences be taught to everybody
D.environmental education be directed toward everyone
第3题
Which of the following is the defect of fishmeal?
A. It doesn't contain much protein necessary for fish.
B. It is not so easily developed as the plant alternatives.
C. It creates serious phosphorous pollution.
D. It is not. as diverse asthe plant alternatives.
第4题
Why must they meet at 7:00?
A.Because they're going to plant trees.
B.Because they don't know the way.
C.Because they have to walk there.
第5题
Which of the following is INCORRECT concerning the mimosa plant?
A.The mimosa plant unfolds its leaves to get light.
B.The mimosa plant folds leaves to prevent water from losing at night.
C.The mimosa plant devises internal clocks in order to survive.
D.If the mimosa plant is placed in the dark, the internal clocks don"t work very well.
第6题
What is Tom going to do in the afternoon?
[A] Finish his homework.
[B] Cut grass.
[C] Plant trees.
[D] Buy groceries.
第7题
Government officials ordered a plant in Japan to halt production because ______.
A.its product left people with food poisoning
B.the plant is going bankrupt
C.its milk products don't sell well
D.it has too limited a production which only serves 8,000 people
第8题
What happened to the man?
A.He was able to plant his garden.
B.His plants were ruined by the hail.
C.He didn't see the vegetables he needed.
第9题
Why do plant breeders try hard to improve peaches?
[A] To get better shaped fruit.
[B] To meet the needs of growers.
[C] To make peaches taste better.
[D] To have a better chance for prizes.
第10题
Why didn't Mr. Plant continue his study after he finished school?
A.He did not like to study.
B.He had to work to support his family.
C.A friend of his father's offered him a job.