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【題目】（山東省濟寧市2015年中考地理試題）國務院就建設長江經濟帶做出了重要部署。要發揮黃金水道優勢，促進經濟發展，由東向西梯度推進，縮小東西差距，為中國經濟持續發展提供重要支撐。結合下圖，完成下列各題。

【1】構建沿海與中西部相互支撐、良性互動的長江經濟帶，最有利的條件是

A.長江巨大的航運價值

B.長江豐富廉價的水能

C.長江流域豐富的水資源

D.長江流域豐富的礦產資源

【2】生態安全關系長江經濟帶的可持續發展，長江上、中、下游各河段需要解決的生態問題是

①水土流失 ②洪澇災害 ③凌汛 ④水污染

A.①②③ B.②③④

C.①②④ D.①③④

【答案】

【1】A

【2】C

【解析】

試題分析：

【1】長江是中國東西向交通的大動脈，自古以來就享有“黃金水道”的盛譽。目前，長江干支流通航里程超過7萬千米，貨運量占全國內河貨運量的60%左右；因此，巨大的航運價值是長江經濟帶最有利的地理條件，故本題選A。

【2】生態安全關系長江經濟帶的可持續發展，水土流失、洪澇災害、水污染等問題是長江各河段需要解決的生態問題；凌汛只發生在秦嶺-淮河一線以北的北方河流，故本題選C。

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