【題目】讀圖1和圖2,完成下列各題。

(1)圖七中的山脈①是我國重要的地理分界線,該山脈以南地區(qū)主要油料作物是。從圖八可知我們貴港市所在省區(qū)盛產(chǎn)(填經(jīng)濟作物),作物熟制為。
(2)A區(qū)域與C區(qū)域的劃分依據(jù)是因素。
(3)C地區(qū)跨經(jīng)度廣,東西距離大,各地距海洋遠近不同,自然景觀東西差異明顯,自東向西依次為森林草原、、荒漠草原、荒漠等。
(4)D地區(qū)主要的自然環(huán)境特征為業(yè)是本區(qū)主要的生產(chǎn)方式;本區(qū)種植業(yè)主要分布在海拔較低,水熱條件較好的地帶。

【答案】
(1)油菜;甘蔗;一年兩熟至三熟
(2)400mm年等降水量線
(3)草原
(4)高寒;畜牧;河谷
【解析】讀圖可知,(1)左圖中的山脈①是秦嶺,它和淮河構(gòu)成了我國南方地區(qū)和北方地區(qū)的分界線;該山脈以南為南方地區(qū),主要油料作物是油菜。從右圖可知,廣西壯族自治區(qū)的貴港市盛產(chǎn)甘蔗,這里的作物熟制為一年兩熟至三熟。(2)A區(qū)域為北方地區(qū),C區(qū)域為西北地區(qū),兩區(qū)域的劃分依據(jù)是400mm年等降水量線,此線以東為季風(fēng)區(qū),以西為非季風(fēng)區(qū)。(3)C地區(qū)跨經(jīng)度廣,東西距離大,各地距海洋遠近不同,降水由東向西逐漸減少;自然景觀東西差異明顯,自東向西依次為森林草原、草原、荒漠草原、荒漠等。(4)D地區(qū)為青藏地區(qū),這里海拔高,氣溫低,主要的自然環(huán)境特征為高寒,畜牧業(yè)是本區(qū)主要的生產(chǎn)方式;本區(qū)種植業(yè)主要分布在海拔較低,水熱條件較好的河谷地帶。
所以答案是:(1)油菜;甘蔗;一年兩至三熟;(2)400mm年等降水量線;(3)草原;(4)高寒;畜牧;河谷。

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