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【題目】讀我國地形剖面圖,完成問題。

1下列關(guān)于我國地勢(shì)對(duì)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(shì)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(jí)階梯流向第一級(jí)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 ④直接利用工業(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】

1B

2C

【解析】

1讀我國地形剖面圖可知:我國地勢(shì)西高東低,呈三級(jí)階梯狀下降分布,受地勢(shì)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(shì)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(huì)造成地面塌陷,直接利用工業(yè)和生活污水灌溉農(nóng)田會(huì)污染土地,故選C。

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