中国西部大开发战略实施8年来，在加强基础设施和生态环境保护建设方面取得很大成就，“加大力度发展有特色的优势产业是西部大开发战略今后一段时间努力的重点”是因为[ ]
①西部地区有显著的矿产资源优势
②西部地区旅游资源丰富多彩
③可以与其他地区优势互补，实现共同繁荣、共同发展
④西部大开发战略实施8 年来，西部地区已经发展起来了
A．①②③
B．①②④
C．②③④
D．①③④
答案：A
When July comes, children know they’ll have the  ir examinations and the school year will __36__ soon.Boys and girls will have nearly a two-month holiday, and they’ll leave school __37__train or by car to __38__ their parents. The summer holidays are the __39__ time of the year for most children. The weather is usually good, so children can spend most of their time __40__ outside. If one lives in the countryside, he can go and play in the woods or in the fields. If he __41__ in a big town, he can usually go to the park to play. The best place for children to spend their summer holidays is the __42__. Some children are lucky enough to live near the sea. __43__ for those who do not live there, if they have the luck to stay in one of the big seaside towns for a week or  two, they’ll __44__ it all the following school year.Now, __45__ makes children like the seaside so much? I think they are the sand, the sea and the sun. The feelings of the sand under their feet, salt water on their skin, and the warm sun on
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