◎ 题干


小题1:Trees can get light from       in the daytime.
A.C02 B.O2 C.the sun D.the moon
小题2:Chlorophyll is in         .
A.sunlight B.soil C.air D.leaves
小题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
小题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
小题5:The picture tells us         .
A.how trees let O2 go into air in the sunlight
B.how trees let CO2 go 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
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据魔方格专家分析,试题“小题1:Trees can get light fromin the daytime. A.C02B.O2C.the sunD.the moon小题2:Chlorophyll is in .A.sunlightB.soilC.airD.leaves小题3:We can get more O­2 …”主要考查了你对  【广告布告类阅读】【科教类阅读】【历史文化类阅读】【健康环保类阅读】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。