问题
问答题 简答题
亮晶异化石灰岩和微晶异化石灰岩。
答案
参考答案:
亮晶异化石灰岩
①主要成分为异化颗粒,微晶方解石很少或没有。
②亮晶方解石充填孔隙,孔隙也可无充填物。
③水动力条件很强环境中生成的。
微晶异化石灰岩
①主要成分微晶方解石和异化颗粒,不含或很少有亮晶方解石。
②孔隙被微晶方解石所充填。
③水动力条件很弱的环境中生成的。
亮晶异化石灰岩和微晶异化石灰岩。
参考答案:
亮晶异化石灰岩
①主要成分为异化颗粒,微晶方解石很少或没有。
②亮晶方解石充填孔隙,孔隙也可无充填物。
③水动力条件很强环境中生成的。
微晶异化石灰岩
①主要成分微晶方解石和异化颗粒,不含或很少有亮晶方解石。
②孔隙被微晶方解石所充填。
③水动力条件很弱的环境中生成的。
完型填空。 | ||||
Two men, both seriously ill, lived in the same hospital room. One man was allowed to 1 up in his bed for an hour every day. His bed was next to the window. 2 man had to lie in bed. The men 3 for hours in bed. They 4 of a lot of things. When the man by the window could sit up, he would 5 the time by describing all the things outside the window. The other man began to live 6 those one-hour periods. The window overlooked a 7 with a lovely lake. Ducks and swans played on the water. As the man by the window 8 all these in a nice voice, the other man would imagine the scene. When he described a band 9 , the other man seemed to see it in his mind. One morning, the day nurse arrived to 10 water for their baths only to find the man by the window dead and 11 the hospital attendants to take the body away. The other man asked if he could be 12 next to the window. The nurse was happy to do so, and left him 13 . Slowly, painfully, he made himself up and looked at the world outside-it was just a blank wall. The man asked the nurse what could have made his deceased roommate describe 14 wonderful things. The nurse told him the man was blind and could not 15 see the wall. She said, "Perhaps he just wanted to encourage you." | ||||
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