单选题
发布日期:2020-08-20
眶内下壁
梨状孔上缘
鼻骨
颧额缝
眶外壁
折线指的是多条线段顺次首尾依次相接组成的曲折连线,也可以说折线是把不在一条直线上的几个点(称为端点),依次用线段连接起来(每个公共端至多有两条线段相连)所构成的图形。当起点(第一个点)与终点(最后一个点)重合时,它就是封闭折线,即多边形。 有时,函数的图象就是一条折线。
骨折是指骨结构的连续性完全或部分断裂。本病多见于儿童及老年人,中青年人也时有发生。病人常为—个部位骨折,少数为多发性骨折。经及时恰当处理,多数病人能恢复原来的功能,少数病人可遗留有不同程度的后遗症。
经过是一个汉语词语,拼音是jīng guò ,一指通过,二指经历的过程,三指从某处过。出自 《淮南子·时则训》“日月之所道” 汉 高诱注:“日月照其所经过之道。”
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Cloze 16 Mark was walking home from school one day when he noticed a boy ahead of him had dropped all of the books he was carrying. Mark helped the boy pick them up. 1 they were going the same way, he carried them for the boy. As they walked, Mark knew the boy’s name was Bill. Mark 2 . discovered that he loved computer games, baseball and history and that he was having a lot of 3 with his other subjects. They arrived at Bill’s home first and Mark was invited in 4 Coke and to watch some television. The afternoon passed 5 with a few laughs and some shared small talk, and then Mark went home. They 6 to see each other around school, had lunch together once or twice and then 7 ended up from the same high school. Just three weeks before they finished school, Bill asked Mark if they could have a talk. Bill 8 him of the day years ago when they had first met. ‘Do you 9 wonder why I was carrying so many things home that day?’ asked Bill. ‘You see, I 10 out my locker because I didn’t want to leave a mess for anyone else. I had planned to 11 from home and I was going home to pack my things. But after we spent some time together 12 and laughing, I realized that 13 I had done that, I would have 14 a new friend and missed all the fun we would have together. So you see, Mark, when you picked up my books that day, you did a lot more. You 15 my life.’
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