阅读理解 Some people say we need to plant trees in places where rock concerts or con

阅读理解

Some people say we need to plant trees in places where rock concerts or conferences are held in order to absorb the carbon dioxide created by the event．This picture shows how trees can help，

Photosynthesis（光合作用）

①photosynthesis takes place when there is sunlight

②Carbon dioxide in air enters the leaves through tiny holes called stomata（气孔）

③leaves contain chlorophyll（叶绿素）which traps the sun's energy

④Plant's roots gather water from the soil

⑤Leaves use chlorophyll and sunlight to change the water and carbon dioxide into food，or sugar，for the plant

⑥Oxygen is released into the air

Source：Science Net

1．What is the best title of the diagram？

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A．How do trees absorb carbon dioxide？

B．How can the air be made cleaner？

C．Trees play an important part in our daily life．

D．How do trees get food in the soil？

2．We can infer________．

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A．The food for trees is made form the water and sugar in the soil

B．photosynthesis can't take place at night

C．photosynthesis can take place at any time

D．Trees help little in improving the air conditions

3．play an important part in catching the sun's energy．

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According to the diagram more trees should be planted________．

[]A．near the riversB．near the cinemasC．along the highwaysD．on the mountains

试题答案

答案：A;B;C;B