近期《美国化学会志》报道,中国科学家以二氧化碳为碳源,金属钠为还原剂,在470℃

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问题:

近期《美国化学会志》报道,中国科学家以二氧化碳为碳源,金属钠为还原剂,在470℃、80Mpa下合成出了金刚石,具有深远的意义。下列说法中错误的是 

A.由二氧化碳合成金刚石是氧化还原反应

B.该反应中二氧化碳部分被还原为金刚石

C.钠被氧化最终生成碳酸钠

D.钠被氧化最终生成氧化钠

考点:晶体、非晶体金属晶体晶胞原子晶体
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When I was growing up, I was embarrassed to be seen with my father. He (1) severely crippled and very short, and when we would walk together, his hand on my arm (2) balance, people would stare. I would inwardly be afraid (3) squirm at the unwanted attention. If he ever noticed or was bothered, he never let (4) .
It was difficult to coordinate (5) steps - his halting, mine impatient - and because of that, we didn’t say much as we went along. But as we started out, he always said, "You (6) the pace. I will try to adjust to you. "
Our usual walk was to or (7) the subway, which was how he got to (8) . He went to work sick, and (9) nasty weather. He almost never missed a day, and would (10) it to the office even if (11) could not: a matter of pride!
He never talked about himself as an object of pity, (12) did he show any envy of the more fortunate or able. What he looked for in others was a "good heart", and if he found one, the owner was good enough for him.
Now that I am older, I believe that is a proper standard (13) which to judge people, even though I still don’t know precisely (14) a "good heart" is. But I know the times I don’t have one myself.
He has (15) gone many years now, but I think (16) him often. I wonder if he sensed my reluctance to be seen with him during our (17) . If he did, I am (18) I never told him how sorry I was, how unworthy I was, how I regretted it. I think of him when I complain about trifles, when I am (19) of another’s good fortune, when I don’t have a "good heart".
At such times I put my hand on his arm to regain my (20) , and say, "You set the pace, I will try to adjust to you.\

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卷烟生产物流的路径和物流方式是根据卷烟企业的工房、装备、仓库等设施的()的确定而确定的。

A.规划分布、生产工艺、生产流程

B.设计分布、加工方式、生产流程

C.设计分布、生产工艺、生产流程

D.设计分布、工艺流程、生产流程

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合作中出现矛盾和分歧是难免的,关键是要

A.合理分工,科学计划

B.及时沟通,消除隔阂

C.公平公正,合作共享

D.统一指挥,服从大局

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在地役权关系中,供役地所有人的义务包括( )。

A.利用供役地附属设施

B.提供供役地

C.容忍义务

D.可以转让供役地的使用权

E.不得转让供役地使用权的义务

题型:选择题

提出“贵粟备荒论”的思想家是()

A.贾谊

B.晁错

C.董仲舒

D.李悝

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