【題目】 熱帶雨林是地球上重要的原始森林,它對人類的生存與發(fā)展有著重要的意義,有“地球之肺”的美譽(yù)。據(jù)此完成下面小題。
【1】世界上面積最大的熱帶雨林分布在( )
A.美國B.中國C.埃及D.巴西
【2】熱帶雨林的作用有( )
①調(diào)節(jié)大氣成分②保持水土
③維護(hù)生物多樣性④大氣增溫
A.①②③B.①②④C.①③④D.②③④
【答案】
【1】D
【2】A
【解析】
巴西是南美洲最大的國家,巴西北部的亞馬孫平原覆蓋著地球上最大的熱帶雨林;亞馬孫平原覆蓋著地球上最大的熱帶雨林。熱帶雨林有巨大的環(huán)境效益,熱帶雨林的作用有提供木材、調(diào)節(jié)全球氣候、為全球提供新鮮空氣、涵養(yǎng)水源,保護(hù)淡水資源、保護(hù)土壤,防止水土流失、提供良好的生態(tài)環(huán)境、維護(hù)生物多樣性等。
【1】
世界上面積最大的熱帶雨林分布在巴西北部的亞馬孫平原地區(qū),熱帶雨林具有巨大的生態(tài)效益和環(huán)境效益。故選D。
【2】
熱帶雨林有“地球之肺”之稱,其作用是:調(diào)節(jié)大氣成分、保持水土、維護(hù)生物多樣性等;熱帶雨林破壞后會造成大氣增溫。故選A。
本題考查巴西熱帶雨林有關(guān)知識。
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