从供选择的答案中选出应填入下列英文语句中______内的正确答案。 Say there are ten thousand computer sho
从供选择的答案中选出应填入下列英文语句中______内的正确答案。
Say there are ten thousand computer shops in the U.S. and Canada. If each shop has a thousand programs, and if half of these programs use the data(1)more than just printing, we are thinking(2)five million programs that must(3)during the next years to take care of the year 2000 changeover. Several hundred thousand programs need(4). And that is only if we start right now. All of this will be in addition to the ongoing maintenance and development work that must(5).