4.D(“探测珠峰峰顶岩石面海拔高”不正确含深达只能探测到珠峰峰顶冰雪层厚度。)5.A(材料二未涉及“登顶详细过程”6.①纪念人类首次从北坡成功登60周年和中国首次精确测定珠峰高程45周年。(2分)②为科学研究、环境保验铁提供资料。(2分)③展现我国的综为和科技发展水平。(2分)
Possible version:Tom thought for a moment and was about to agree, but he changed his mind. " I can't, BenYou know Aunt Polly wants the fence to be perfect. It has to be done very carefully.I don'tthink you can do it well enough. "He said to Ben, who looked a little discouraged. "Oh, Tom, I'llbe careful. Please let me have a try I would like to give you my apple if you agree, "requestedBen In the end, Tom gave up the brush with unwillingness on his face, but joy in his heartWhile ben worked at the fence in the hot sun Tom sat under a tree, eating the apple, andlanning how to get more help. many of his other friends walked past him. Each one came topllaugh, but remained to whitewash the fence because they all got interested in it. One by one, theywhitewashed the fence, each giving Tom a reward, big or small. If he hadn't run out ofwhitewash, Tom would have owned everything belonging to his friends. He had a most wonderful andidle Saturday, sitting in the shade and enjoying the rewards that his friends gave him
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