阅读理解。1. Trees can get light from______ in the daytime. A. C02 B. O2 C. the sun D. the moon 2. Chlorophyll is in ______

◎ 题干

阅读理解。

1. Trees can get light from ______ in the daytime.

A. C0₂
B. O₂
C. the sun
D. the moon

2. Chlorophyll is in _______.

A. sunlight
B. soil
C. air
D. leaves

3. We can get more O₂ by _______.

A. planting more trees
B. cutting trees down
C. making the water in soil (土壤) polluted
D. making more CO₂

4. CO₂ from air and _______ can produce food for trees with the help of chlorophyll and sunlight.

A. water in the sea
B. water from soil
C. water in the river
D. O₂ into air

5. The picture tells us _______.

A. how trees let O₂ go into air in the sunlight
B. how trees let CO₂go into air in the sunlight
C. the sunlight isn't important to trees at all
D. trees can take in O₂ and let out CO₂

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