问题 单项选择题 A1/A2型题

不透明瓷的作用描述中错误的是()

A.是金瓷结合的主要部分

B.遮盖金属色

C.形成瓷金化学结合

D.形成金瓷冠基础色调

E.增加瓷层亮度

答案

参考答案:E

解析:增加瓷层亮度是通过表面上釉实现的。

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阅读文段,回答问题。
绿苔小题
  我既惊叹乔木的非凡气宇,也羡爱白花的动人香艳,然而,在我这狭小而瘠薄的园地上,却只生着斑斑绿苔。
  绿苔,它没有深的根、茂的叶,且颜色单调,形容猥琐。大约正是自惭形秽吧,所以它总是伏在墙根、屋后……默默地生长,不敢去同别的花木一争阳光的爱抚。
  自然,它不会赢得人们的注目,更不消说喜爱和赞美了。甚至,它有时还使踏在上面的人们一不留神,滑个踉跄,从而引起小小的不快呢?
  可是,我却独独窃爱我这块小小园地上的绿苔,你看:
  风卷来,雨倾来,花木们在风雨中折腰、摇摆,而那绿苔,依旧镇定地、冷静地绿着。
  酷暑炎炎,烈日之下,别处一些花木的叶子打了蔫,而眼前那斑斑绿苔,却仍自点缀着被晒得冒烟的土地,慰我心头焦渴,示我生命还在,而且还大有“苔痕上阶绿”的意境呢。每当读书作文倦怠之时,抬眼望望那青葱的颜色,也颇为怡然。
1.本文是要赞美绿苔,可前文却先写其貌不惊人,不受人注目,这是为什么?
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2.作者为什么要赞美绿苔呢?从文中概括出它的两个特点。
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3.本文能把无奇的绿苔写出新意,从中你能受到什么启发呢?
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4.有人说做绿苔也是一种做人的姿态,你同意这种看法吗?说说看。
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单项选择题

For more than a decade, the prevailing view of innovation has been that little guys had the edge. Innovation bubbled up from the bottom, from upstarts and insurgents. Big companies didn’t innovate, and government got in the way. In the dominant innovation narrative, venture-backed start-up companies were cast as the nimble winners and large corporations as the sluggish losers.

There was a rich vein of business-school research supporting the notion that innovation comes most naturally from small-scale outsiders. That was the headline point that a generation of business people, venture investors and policy makers took away from Clayton M. Christensen’s 1997 classic, The Innovator’s Dilemma, which examined the process of disruptive change.

But a shift in thinking is under way, driven by altered circumstances. In the United States and abroad, the biggest economic and social challenges—and potential business opportunities—are problems in multifaceted fields like the environment, energy and health care that rely on complex systems.

Solutions won’t come from the next new gadget or clever software, though such innovations will help. Instead, they must plug into a larger network of change shaped by economics, regulation and policy. Progress, experts say, will depend on people in a wide range of disciplines, and collaboration across the public and private sectors.

"These days, more than ever, size matters in the innovation game," said John Kao, a former professor at the Harvard business school and an innovation consultant to governments and corporations. In its economic recovery package, the Obama administration is financing programs to generate innovation with technology in health care and energy. The government will spend billions to accelerate the adoption of electronic patient records to help improve care and curb costs, and billions more to spur the installation of so-called smart grids that use sensors and computerized meters to reduce electricity consumption.

In other developed nations, where energy costs are higher than in the United States, government and corporate projects to cut fuel use and reduce carbon emissions are further along. But the Obama administration is pushing environmental and energy conservation policy more in the direction of Europe and Japan. The change will bolster demand for more efficient and more environmentally friendly systems for managing commuter traffic, food distribution, electric grids and waterways.

These systems are animated by inexpensive sensors and ever-increasing computing power but also require the skills to analyze, model and optimize complex networks, factoring in things as diverse as weather patterns and human behavior. Big companies like General Electric and IBM that employ scientists in many disciplines typically have the skills and scale to tackle such projects.

The text is written to answer the question()

A. "Does innovation belongs to the small"

B. "Why small businesses are more innovative"

C. "Are Americans more creative than Europeans and Japanese"

D. "Why is technological innovation important to today’s world"