问题
问答题 简答题
沉积岩有哪些共同特征？
答案
参考答案：
沉积岩具有许多与外力地质作用和地表条件有关的共同特征，其中主要是：
1）沉积岩的颜色不但是成分的表现，而且能反映沉积环境的特征.
2）具有成层构造和层理，特别是具有波痕、泥裂等层面沉积构造.
3）常含有古代动植物的化石.
4）在地壳浅层成层分布.
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沉积岩有哪些共同特征？
参考答案：
沉积岩具有许多与外力地质作用和地表条件有关的共同特征，其中主要是：
1）沉积岩的颜色不但是成分的表现，而且能反映沉积环境的特征.
2）具有成层构造和层理，特别是具有波痕、泥裂等层面沉积构造.
3）常含有古代动植物的化石.
4）在地壳浅层成层分布.
James’s New Bicycle James shook his money box again. Nothing! He carefully __36__ the coins that lay on the bed. $24.52 was all that he had. The bicycle he wanted was at least $90! __37__ on earth was he going to get the __38__ of the money? He knew that his friends all had bicycles. It was __39__ to hang around with people when you were the only one without wheels. He thought about what he could do. There was no __40__ asking his parents, for he knew they had no money to __41__. There was only one way to get the money, and that was to __42__ it. He would have to find a job. __43__ who would hire him and what could he do? He decided to ask Mr. Clay for advice, who usually had __44__ on most things. “Well, you can start right here,” said Mr. Clay. “My windows need cleaning and my car needs washing.” That was the __45__ of James’s odd-job business. For three months he worked every day after finishing his homework. He was amazed by the __46__ of jobs that people found for him to do. He took dogs and babies for walks, cleared out cupboards, and mended books. He lost count of the __47__ of cars he washed and windows he cleaned, but the __48__ increased and he knew that he would soon have __49__ for the bicycle he longed for. The day __50__ came when James counted his money and found $94.32. He __51__ no time and went down to the shop to pick up the bicycle he wanted. He rode __52__ home, looking forward to showing his new bicycle to his friends. It had been hard __53__ for the money, but James knew that he valued his bicycle far more __54__ he had bought it with his own money. He had __55__ what he thought was impossible, and that was worth even than the bicycle.
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