James’ grandfather wrote to help James q 小题1:    smoking. James’ grandfather once became a  小题2:   to cigarettes in three ways. His body was a  小题3:   to having nicotine. He began to do it    小题4:   (自动地) and became    小题5:    (心理上) interested. But he finally managed to stop when realizing the harmful effects of it.

敞开循环冷却水处理的重要性？