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【题目】研学旅行在近几年的发展越来越热,研学和旅行的结合可以推动课外学习资源的开发,提升学习的效果。根据一些同学的研学笔记,回答下列问题。

甲:站在三峡水电站大坝上,我不禁想起一句诗“截断巫山云雨,高峡出平湖”。三峡水电站见证着长江流域丰富的水能资源,长江水能资源主要蕴藏在源头至宜昌河段。同时长江也是中国东西向交通的大动脉,航运价值高。

乙:鸡鸣三省大桥建于川滇黔三省交界处,三省虽近在咫尺,却阻隔于天堑。大桥建成后,两岸的交通时间将从现在开车绕行两个半小时,或爬山渡河一个半小时,缩短到开车一分钟,或步行几分钟。对于生活在三省交界处的人们来说真是方便了。

(1)长江注入______海,深切_______山,形成三峡。长江流域水能资源丰富,有“____________”之称,长江水能资源主要位于_____游河段(上、中、下)。长江干支流通航里程长,享有“__________”的盛誉。

(2)“川滇黔”对应的省级行政区域单位分别是四川省、_______省和______省(填省级行政区域单位名称)。鸡鸣三省大桥建设难度______(大或小),该区域有中央红军召开的“鸡鸣三省会议”原址,优美的峡谷风光,据此可以发展_________业。山区生态环境相对脆弱,举一例山区常见的自然灾害________

【答案】 巫山 水能宝库 黄金水道 云南 贵州 旅游 山洪、崩塌、滑坡、泥石流任一答案

【解析】

长江是我国流程最长、流量最大、流域面积最广的河流,发源于青藏高原的唐古拉山,自西向东经青藏高原、四川盆地和长江中下游平原后,注入东海;云贵高原是我国四大高原之一,地形崎岖、多喀斯特地貌。

(1)长江发源于青藏高原,自西向东注入东海,长江上游深切巫山,落差大,水能资源丰富,有“水能宝库”称号;水能主要集中在上游河段,干支流众多,航运价值高,有“黄金水道”称号。

(2)“川滇黔”中的三个省区简称分别是四川省、云南省和贵州省,鸡鸣三省大桥位于川滇黔交界处,地处云贵高原,地形崎岖,修建难度大,该地区有优美的风光,可以发展旅游业,但同时该地区生态环境脆弱,自然灾害频繁,如山洪、崩塌、滑坡等。

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