题目

阅读理解 I am a five-year-old elephant. When I was a baby, I lived in the wild with my parents. But some hunters killed my mother, and they caught me. They sold me to this circus(马戏团) and a train carried me here. I was born in a large family. My mother was the head of the family. As you might know, when a female is born into the family, she never leaves. Closely and happily, we travelled together, ate together, played together, and slept together. When I was in the family, my mother and my sisters looked after me carefully. I played happily with all the other elephants. Now, “中国龙”——黄河孕育了灿烂的中华文明，但其身体上也存在许多“病症”（如下图所示）。据此回答下列各题。小题1:黄河各河段的“病症”，其主要成因及对症的“药方”对应正确的是A．“大量脱发”——气候寒冷干燥——加高、加固堤坝B．“动脉阻塞”——过渡放牧与垦殖——建立自然保护区C．“腹泻”——地表植被破坏——退耕还林、还草D．“脚肿”——黄土高原土质疏松，地形崎岖——在下游修筑梯田小题2:黄河上游进行梯级开发的有利条件是A．地处我国地势阶梯交界处，河流落差大B．属亚热带季风气候，年降水量大C．地势平垣，水量大，水流平缓D．地处北方地区，气温高，蒸发旺盛