题目

There are robots all around us. Some do very complicated jobs like flying airplanes and driving subway trains. and some do one simple job. When an automatic washing machine is switched on, water pours in. The machine waits until the water is warm enough for washing clothes. It does this by “feedback”(反馈). Information about what is happening is feedback into the robot to tell what to do next. Our eyes, ears and other senses are our feedback. They tell us what is going on around us. So robots are like human beings in two ways. They work and they have feedback. In some ways robots a(2013·江西六所重点中学一模)—Tom has played a lot of computer games recently.—Yes, that might ________ his failure in the mid­term examinations.A．account for B．answer forC．ask for D．stand for