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Q6 according to the passage edisons chief concern as

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Q6: According to the passage, Edison’s chief concern as an inventor was the A. availability of a commercial market B. costs of developing a prototype C. originality of his inventions D. maintenance of high standards throughout production E. generation of enough profits to pay for continued marketing Answer: -------------------------------------------------------------------------------- Q7: The author of the passage implies that the shift away from the views of Westinghouse’s contemporaries should be regarded as ----------------------------------------------------------------------------------------------------------- - Q8: A sudden increase in the production of elephant ivory artifacts on the Mediterranean coast of North Africa occurred in the tenth century. Historians explain this increase as the result of an area opening up as a new source of ivory and argue on this basis that the important medieval trade between North Africa and East Africa began at this period. Each of following, if true, provides some support for the historians’ account described above EXCEPT: A. In East Africa gold coins from Mediterranean North Africa have been found at a tenth-century site but at no earlier sites. B. The many surviving letters of pre-tenth-century North African merchants include no mention of business transactions involving East Africa. C. Excavations in East Africa reveal a tenth-century change in architectural style to reflect North African patterns. 15
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D. Documents from Mediterranean Europe and North Africa that date back earlier than the tenth century show knowledge of East African animals. E. East African carvings in a style characteristic of the tenth century depict seagoing vessels very different from those used by local sailors but of a type common in the Mediterranean. Answer: ----------------------------------------------------------------------------------------------------------- - Q9 to Q12: Ecoefficiency (measures to minimize environmental impact through the reduction Line or elimination of waste from (5) production processes) has become a goal for companies worldwide, with many realizing significant cost savings from such innovations. Peter Senge (10) and Goran Carstedt see this development as laudable but suggest that simply adopting ecoefficiency innovations could actually worsen environmental (15) stresses in the future. Such innovations reduce production waste but do not alter the num- ber of products manufactured nor the waste generated from (20) their use and discard; indeed, most companies invest in eco- efficiency improvements in order to increase profits and growth. Moreover, there is (25) no guarantee that increased economic growth from eco- efficiency will come in similarly ecoefficient ways, since in today’s global markets, (30) greater profits may be turned into investment capital that could easily be reinvested in old-style eco-inefficient industries. Even a vastly (35) more ecoefficient industrial system could, were it to grow much larger, generate more 16
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