题目

It was the first time that she ______________ gone to the summer camp in Shanghai, so her parents were concerned __________ her safety. A . had; about B . had; with C . has; with D . has; about 答案：A邓.小平说“科学技术是第一生产力”。下列哪次科技革命最早体现科学技术成为生产力发展的直接动力？A．第一次工业革命B．第二次工业革命C．第三次科技革命D．信息技术革命