[A] order [B] invent [C] produce [D] appreciate

[A] order

[B] invent

[C] produce

[D] appreciate

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发布时间：2019-09-06

更多“[A] order [B] invent [C] produce [D] appreciate”相关的问题

第1题

If you ________ something such as a story or excuse, you invent it, sometimes in order t

A. take up

B. make up

C. look up

D. keep up

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第2题

One basic weakness in a conservation system based wholly on economic motives is that most

members of the land community have no economic value. Yet these creatures are members of the biotic community. If its stability depends on its integrity, they are entitled to continuance. When one of these non-economic categories is threatened, and, if we happen to love it, we invent excuses to give it economic importance. At the beginning of century, songbirds were supposed to be disappearing. Scientists jumped to the rescue with some distinctly shaky evidence to the effect that insects would eat us up if birds failed to control them. The evidence had to be economic in order to be valid. It is painful to read these roundabout accounts today. We have no land ethic yet, but we have at least drawn nearer the point of admitting that birds should continue as a matter of intrinsic right, regardless of the presence or absence of economic advantage to us.

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第3题

The invention of both labor-saving tools and tools of intelligence is rarely accidental. I

nstead, it is usually the product of human need;【C1】______is truly the mother of invention. People usually devise tools to【C2】______for natural deficiencies. For example, people invented weapons to defend【C3】______from physically superior【C4】______But【C5】______is only one incentive(鼓励)for inventions. People also invent【C6】______tools to【C7】______certain established tasks more effectively. For instance, people developed the bow and arrow from the【C8】______spear or javelin(标枪)in order to shoot【C9】______and strike with greater strength.【C10】______civilizations developed, greater work efficiency came to be demanded, and【C11】______tools became more【C12】______A tool would【C13】______a function until it proved【C14】______in meeting human needs, at which point an improvement would be made. One impetus(动力)for invention has always been the【C15】______for speed and high-quality results — provided they are achieved【C16】______reasonable costs. Stone pebbles were sufficient to account for small quantities of possessions,【C17】______they were not efficient enough for performing sophisticated mathematics. However, beads(念珠)arranged systematically evolved into the abacus(算盘). The【C18】______of this tool can be【C19】______to the development of commerce in the East around 3,000 BC and the abacus is known【C20】______by the ancient Babylonian, Egyptian, Chinese, etc.

【C1】

A．imagination

B．creativity

C．necessity

D．accident

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第4题

n.经验；教训（）

A.invent

B.lesson

C.illness

D.galaxy