下列说法中正确的是（） A．原子中一定含有质子、中子和电子三种微粒 B．饱和溶

发布时间：2017-04-20 22:24 │ 来源：www.tikuol.com

题型：选择题

问题：

下列说法中正确的是（　　）

A．原子中一定含有质子、中子和电子三种微粒

B．饱和溶液在升高温度后都会变成不饱和溶液

C．根据质量守恒定律，3克碳在1O克氧气中充分燃烧后生成13克二氧化碳

D．pH＜7的溶液显酸性，pH值越小，溶液酸性越强

考点：原子结构质量守恒定律饱和溶液，不饱和溶液原子的定义溶液的酸碱性与pH值

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下列物质的用途中是利用其物质的物理性质的是（　　）

A．用盐酸清除铁器表面上的铁锈

B．用石墨作电极

C．用氢气作燃料推动火箭升空

D．用含氢氧化铝的药物治疗胃酸过多的病症

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题型：选择题

完形填空。
I will never forget the year when I was about twelve years old. My mother told us that we would not be 1 Christmas gifts because there was not enough money in our family. I felt sad and thought, "What would I say when the other kids asked what I had 2 ?" Just when I started to 3 that there would no Christmas that year, three women 4 at our house with gifts for all of us. For me they brought a doll. I felt such a sense of 5 that I would no longer have to be embarrassed (尴尬) when I returned to school. I wasn't 6 . Somebody had thought me important 7 to bring me a gift. Years later, when I stood in the kitchen of my new house, thinking how I could try to make my 8 Christmas in the new house special and memorable, I 9 remembered the women's visit. I decided that I wanted to create that same feeling of 10 for as many children as I could possibly reach. So I 11 a plan and gathered forty people from my company to prepare. Then about 125 orphans (孤儿) were invited at our Christmas party. For every child, we wrapped colorful packages filled with toys, clothes, and school supplies, 12 with a child's name. We wanted all of them to know their gifts were 13 . Before I called out their names and handed them their gifts, I 14 them that they couldn't open their presents 15 every child had got his. Finally the 16 , which they had been so eagerly waiting for, came as I called out, "One, two, three. Open your presents!" As the children opened their packages, their faces beamed and their bright smiles 17 up the whole house, where The atmosphere of 18 was so obvious, and 19 wasn't just about toys. It was a feeling - "I wasn't forgotten", which I have been so familiar 20 that very Christmas long ago when the women came to visit us. Being concerned matters much for any child.
( )1. A. sending ( )2. A. found ( )3. A. admire ( )4. A. broke in ( )5. A. relief ( )6. A. remembered ( )7. A. highly ( )8. A. present ( )9. A. hardly ( )10. A. strength ( )11. A. kept up with ( )12. A. none ( )13. A. fine ( )14. A. reminded ( )15. A. after ( )16. A. chance ( )17. A. lit ( )18. A. peace ( )19. A. it ( )20. A. by	B. receiving B. prepared B. hope B. settled down B. loss B. loved B. little B. first B. immediately B. independence B. caught up with B. few B. special B. insisted B. until B. gift B. took B. pity B. such B. till	C. making C. got C. suggest C. turned up C. achievement C. forgotten C. poorly C. recent C. regularly C. importance C. came up with C. some C. helpful C. proved C. when C. moment C. burned C. calmness C. something C. for	D. exchanging D. expected D. accept D. turned off D. sadness D. affected D. enough D. former D. sometimes D. safety D. put up with D. each D. original D. allowed D. since D. reward D. cheered D. joy D. everybody D. since

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题型：选择题

支气管哮喘重症发作，以下选项皮质激素的用法是正确的（）

A.小剂量逐渐递增

B.大剂量静脉用药

C.大剂量口服

D.小剂量长疗程

E.大剂量吸入

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题型：选择题

关于国家声环境质量标准和环境噪声排放标准的以下表述中，不正确的是( )。

A．国家环境保护行政主管部门制定环境噪声排放标准
B．国家环境保护行政主管部门制定声环境质量标准
C．根据国家声环境质量标准和国家经济、技术条件制定环境噪声排放标准
D．制定声环境质量标准无需划分不同功能区

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采用架空乘人装置运送人员时，乘坐间距不应小于牵引钢丝绳5s的运行距离，且不得小于（）m。

A.4

B.5

C.6

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下列说法中正确的是（ ） A．原子中一定含有质子、中子和电子三种微粒 B．饱和溶

问题：

下列说法中正确的是（） A．原子中一定含有质子、中子和电子三种微粒 B．饱和溶