【題目】讀圖,回答下列問題。
(1)圖中所示的河流是 , 它是我國的第長河,發(fā)源于山脈。
(2)在上游干旱的寧夏、內(nèi)蒙古境內(nèi),該河塑造了寧夏平原和A平原,它為沿岸地球提供了灌溉之利。
(3)“一碗水,半碗泥”的說法,形象地反映了該河河段含沙量之大。
(4)為了避免洪水的災(zāi)害,國家在該河的下游。
【答案】
(1)黃河;二;巴顏喀拉
(2)河套
(3)中下游
(4)加固黃河大堤
【解析】考查黃河的概況,要理解記憶。解:(1)黃河是我國第二長河,也是世界著名大河之一。它源自巴顏喀拉山,流經(jīng)青海、四川等9省區(qū),注入渤海。(2)黃河出青銅峽后,在寧夏、內(nèi)蒙古段,地勢(shì)比較平坦,水流緩慢,泥沙沉積,形成了寧夏平原和A河套平原。(3)“一碗水,半碗泥”的說法,形象地反映了該河中下游河段含沙量之大。(4)建國以來,對(duì)黃河進(jìn)行了綜合治理。一方面在上、中游,特別是黃土高原地區(qū),大力開展水土保持工作,控制水土流失,減少泥沙下泄;另一方面在下游修堤筑壩,加固黃河大堤。這樣,對(duì)確保黃河下游兩岸人民生命財(cái)產(chǎn)安全起到了很大作用。所以答案是:(1)黃河;二;巴顏喀拉;(2)河套;(3)中下游;(4)加固黃河大堤。
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