题目内容

【题目】要治理黄河的泥沙，关键是（ ）

A．上游修水库 B．中游水土保持 C．中游垦荒种粮 D．下游修筑大堤

【答案】B

【解析】

试题分析：黄河是我国第二长河，也是世界著名大河之一，它源自巴颜喀拉山，流经青海、四川等9省区，注入渤海，全长5464千米．黄河中游流经黄土高原，由于水土流失严重，河流泥沙大增，下游流经华北平原，河床宽坦，水流缓慢，泥沙大量淤积，使河床抬高，成为举世闻名的地上河．

解：黄河中游流经黄土高原，由于水土流失严重，河流泥沙大增，治理黄河的关键是治理中游泥沙即黄土高原的水土保持．

故选：B．

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“Save the whales!” That's what the picture on Jake Smith's bedroom wall said. Jake liked having a picture that said something important that showed he cared. He just never expected to get a chance to save a real whale, one right in his own neighbourhood.

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An animal rescue service team soon arrived in a truck with heavy lifting machinery, to help move the animal. Jake and his family couldn't do much on the beach, so they went back to their house and made sandwiches and hot tea for the rescuers. At least, Jake thought, they could help in some way.

Back at the beach, they offered the food to the rescuers and were happy to see that it was needed. It was getting dark. Some people lined up their cars along the beach and shined the headlights on the sand. The rescuers would not give up. After trying many times they were finally able to lift the whale into the water. Everyone cheered when it headed out to sea. It swam out about a mile and then disappeared for a moment under the sea. Then, in what looked like a jump for joy, it rose high above the water—a thank-you to those who had worked so hard to save its life.

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