Questions are based on the following passage. Despite a cooling of the economy， high technology companies are still crying out for skilled workers. The Information Technology Association of America projects that morethan 800，000 technology jobs will go unfilled next year. The lack of qualified workers pos-es a huge threat to the US economy. The most commonly cited reason for this state of affairs is that the country's agrarian-age education system， separated from the needs of the business world， fails to prepare stu-dents in the primary and secondary grades for twenty-first-century work. Yet an inadequateand outmoded education system is only part of the problem. A less tangible but equallypowerful cause is an antique classification system that divides the workforce into twocamps: white-collar knowledge workers and blue-collar manual labourers. Blue-collar workers emerged in the United States during the Industrial Age as work mi-grated from farms to factories. White-collar office workers became a significant class in thetwentieth century， outnumbering their blue-collar brethren by mid-century. But the whiteor blue paradigm has clearly outlived its utility. Corporations increasingly require a newlayer of knowledge worker: a highly skilled multi-disciplinarian who combines the mindof the white-collar worker with the hands of the blue-collar employee. Armed with a solidgrounding in mathematics and science （physics， chemistry， and biology）， these 'gold-collar'workers —— so named for their contributions to their companies and to the economy， as wellas for their personal earning ability —— apply that knowledge to technology. Of course， thegold-collar worker already exists in a wide range of jobs across a wide range of businesses:think of the maintenance technician who tests and repairs aircraft systems at American Air-lines; the network administrator who manages systems and network operations at P&G; theadvanced-manufacturing technician at Intel. But until American business recognises these people as a new class of worker， onewhose collar is neither blue nor white， demands that schools do a better job of preparingemployees for the twenty-first-century workforce will be futile. What effects may the insufficiency of qualified workers have， according to the passage? 查看材料