单项选择题 The history of information-technology industries is ____ smooth.butB、 nothing butC、 all butD、 not but that

单项选择题 Creating a new chip design or a new software program is a ____ effort that relies almost exclusively on well-paid domestic workers.labor-orientedC、 technology-intensiveD、 technology-oriented

单项选择题 Instead, there is a new business cycle, tied to the health of the high-tech sector. Riding a wave of technological optimism, the computer, software, and communications industries have grown at a pace far exceeding the rest of the economy over the past three years, helping to _____the expansion.