【題目】讀我國地形剖面圖，完成問題。

【1】下列關(guān)于我國地勢對河流、農(nóng)業(yè)、交通、水能的影響，表述正確的是（　�。�

A. 我國許多大河自東向西流入海洋

B. 便于海洋濕潤氣候流入內(nèi)陸，形成降水，有利于農(nóng)業(yè)生產(chǎn)

C. 受地勢高低的影響，我國眾多大河，溝通了南北交通

D. 河流從第三級階梯流向第一級階梯，落差大，水能資源極為豐富

【2】下列做法能有效解決水資源短缺問題，并且符合可持續(xù)發(fā)展原則的是（　�。�

①推廣噴灌、滴管技術(shù) ②增加地下水的開采 ③生活用水一水多用�、苤苯永霉I(yè)和生活污水灌溉農(nóng)田 ⑤推廣節(jié)水器具

A. ①②③ B. ②③⑤ C. ①③⑤ D. ②④⑤

【答案】

【1】B

【2】C

【解析】

【1】讀我國地形剖面圖可知：我國地勢西高東低，呈三級階梯狀下降分布，受地勢高低的影響，我國眾多大河自西向東流入海洋，溝通了東西交通；我國地勢西高東低，有利于海洋暖濕氣流深入內(nèi)陸，帶來豐沛的降水，有利于農(nóng)業(yè)生產(chǎn)，故選B。

【2】能夠有效解決我國缺水問題并且符合可持續(xù)發(fā)展原則的有：減少農(nóng)藥、化肥的使用，改變灌溉方式，推廣噴灌、滴灌技術(shù)，污水處理，達(dá)標(biāo)排放，推廣節(jié)水器具、生活用水一水多用等，增加地下水的開采量會造成地面塌陷，直接利用工業(yè)和生活污水灌溉農(nóng)田會污染土地，故選C。

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