【題目】讀下圖,回答下題。
【1】上圖中河流特征及其成因?qū)?yīng)正確的是
A. 渭河南岸缺大的、長(zhǎng)的支流--地轉(zhuǎn)偏向力影響
B. 河流以冰雪融水補(bǔ)給為主——發(fā)源于高原
C. 洛河含沙量小一一流經(jīng)地區(qū)植被覆蓋率高
D. 涇河自西北流向東南——地勢(shì)西北高東南低
【2】圖中涇河流域可持續(xù)發(fā)展的重點(diǎn)是
A. 加固大堤,治理“地上河” B. 合理采礦,保持水土
C. 引水灌溉,發(fā)展農(nóng)業(yè) D. 修建水庫(kù),梯級(jí)開(kāi)發(fā)
【答案】
【1】D
【2】B
【解析】試題分析:
【1】渭河南岸臨近秦嶺山,受地形影響缺大的、長(zhǎng)的支流,A錯(cuò);圖示區(qū)域是溫帶季風(fēng)氣候,河流以雨水補(bǔ)給為主,B錯(cuò);洛河流經(jīng)黃土高原,植被覆蓋率低,水土流失嚴(yán)重,河流的含沙量大,C錯(cuò);涇河自西北流向東南,是因?yàn)榈貏?shì)西北高東南低。選D正確。
【2】涇河段沒(méi)有“地上河”,A錯(cuò);涇河流經(jīng)黃土高原,流域內(nèi)煤炭資源豐富,要注意合理采礦,保持水土,B正確;流域內(nèi)應(yīng)以水土保持為重點(diǎn),不是引水灌溉為重點(diǎn),C錯(cuò);流域內(nèi)流量較小,不人宜梯級(jí)開(kāi)發(fā),D錯(cuò)。選B正確。
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