There()three plants in the corners of the room.
第1题:
A、three quarters of an hour time
B、three quarter's of an hour time
C、three quarters of an hour's time
D、three quarters'of an hour's time
第2题:
Plants can ____ inorganic matter.
A: live by
B: live on
C: live with
D: live up to
第3题:
most of australia’s unique plants and animals are imported from other continents. ()
第4题:
24. The reason why most plants can’t grow on the sandy beach is that
A. there isn't enough sunlight
B. there is too much water
C. it is too crowded there
D. it has little food for plants
第5题:
第6题:
第7题:
第8题:
There()three plants in the corners of the room.
Ais
Bare
Chave
第9题:
Cooperation with other organizations.
Cooperation with the World Bank.
Two projects about treatment plants for sewage waters in Vlore and Pogradec.
To control the waste water discharged.
第10题:
Greenhouses may be used to keep plants at a moderate temperature
The climate of France is unsuited to growing tropical plants outdoors.
Louis ⅩⅣ was a frequent and enthusiastic traveler to Africa and Asia
第11题:
Because they developed so early in the history of the planet.
Because of their primitive structure.
Because they prepare soil for other plants.
Because they were the first plants to live in Antarctica.
第12题:
steam plants, electric motors and compressed air
diesel engine, hydraulic machinery and compressed air
steam plants, electric motors and hydraulic machinery
diesel engines, steam plants and hydraulic machinery
第13题:
The wealthy doctor has a __________ daughter.
A、three-years-old
B、three years’ old
C、three-year-old
D、three-year old
第14题:
There ( ) three plants in the office.
A. are
B. is
C. have
第15题:
A
Why do plants grow in some places and not in others? Why does some land have so much growing on it,while other land has almost no plants growing on it at all?
To grow plants need several things. One is warmth. In very cold places almost nothing grows. Plants also need water. In very dry parts of the earth only a few unusual plants can grow. That's why dry deserts everywhere are almost not covered by trees or grass.
Plants must also have a place in which to f,ut down their roots and grow. They find it diffi-culr to grow on hard land. The town is built on hard land. The plants here have only the soil found between the cracks of the stones Io grow in.
Another thing plants must have before they can grow is food.
Whar will happen if we try to make things grow on the sandy beach? A few plants,such as beach grass,will grow in sand,L ut most plants won-t. Even if the weather is warm enough.and we water the plants each day. Many of them will die because the sand on this beach has al-most no food for plants.
( )21. According to the passage,plants need _________ things to grow well.
A. two
B. three
C. four
D. five
第16题:
B
Scientists are trying to make the deserts into good land again. They want to,bring water to the deserts. But more and more places of the earth is becoming deserts all the time, Scientists may not be able to change the deserts. Scientists think that people make deserts. People are do-ing bad things to the earth.
Some places on the earth don-t get very much rain. But they still don-t become deserts.This is because some green plants are growing there. Small green plants and grass are very helpful to dry places. Plants don't let the wind blow the earth away. When 8 little bit of rain falls,the plants hold the water. Without plants,the land can become a desert much more easily.
( )26. Why can the land become a desert?
A. Because some places don't get very much rain.
B. Because plants don-t let the hot sun make the earth even drier.
C. Because people don't keep the earth well.
D. Because scientists haven-t learnt enough about the deserts.
第17题:
第18题:
第19题:
第20题:
The three moving vanes and the three fixed vanes form three pressure chambers
The three moving vanes and the three fixed vanes form six pressure chambers
The three moving vanes and the three fixed vanes form nine pressure chambers
The three moving vanes and the three fixed vanes form twelve pressure chambers
第21题:
flourish
fade
stem
cultivate
第22题:
accomplish
accelerate
accumulate
account
第23题:
It meant people’s ability to produce commodities.
It meant people’s ability to domesticate plants and animals.
In population it meant the ability to raise a ruling class.
In population it meant the ability to draw other peoples to the area.