请问:science and technology changes the way of production 里的science and technology是单数还是复数?书上的一句话后面是：lead the human society to make advance and then make our life more and more convenient.
问题描述：
请问:science and technology changes the way of production 里的science and technology是单数还是复数?
书上的一句话
后面是：lead the human society to make advance and then make our life more and more convenient.
答