【題目】“中國龍”---黃河哺育了燦爛的中華文明,但其身體上也存在許多“病癥”。讀圖,回答下列問題。
【1】黃河各河段“病癥”的成因及對癥的“藥方”組合正確的是( )
A.“大量脫發(fā)”-----氣候寒冷干旱—加高、加固堤壩
B.“腹瀉”-----地表植被遭到破壞—退耕還林、還草
C.“腳腫”-----黃土結(jié)構疏松,地表崎嶇—在下游修筑梯田
D.“動脈阻塞”-----過度放牧與墾殖—建立自然保護區(qū)
【2】黃河上游進行梯級開發(fā)的有利條件是( )
A.地處我國階梯交界處,河流落差大
B.屬于亞熱帶季風氣候,年降水量大
C.地勢平坦,水量大,水流平緩
D.地處北方地區(qū),氣溫高,蒸發(fā)旺盛
【答案】
【1】B
【2】A
【解析】
試題分析:
【1】“大量脫發(fā)”指荒漠化,是干旱地區(qū)地表植被受到破壞造成的,不能用加固大壩來解決,A錯;“腹瀉”指的是水土流失,主要是地表植被嚴重破壞造成的,要加強退耕還林、增加地表植被覆蓋率,B正確;“腳腫”指地上河,地上河的發(fā)生也和中游地區(qū)的水土流失有關,但不晨下游修梯田,而應加固大壩, C錯;“動脈阻塞”指的凌汛現(xiàn)象,不是過度放牧造成的,應當是疏浚河道,而不是建立自然保護區(qū), D錯。選B正確。
【2】黃河上游地處我國地勢階梯交界處,河流落差大,水能資源豐富;這里是溫帶大陸性氣候,年降水量較少;上游進行梯級開發(fā)主要是利用河流的水能。選A正確。
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The production of coffee beans is a huge, profitable business, but, unfortunately, full-sun production is taking over the industry and bringing about a lot of damage. The change in how coffee is grown from shade-grown production to full-sun production endangers the very existence of, certain animals and birds, and even disturbs the world’s ecological balance.
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