【单选题】Software engineering is the science and art of specifying, designing, implementing, and(66)with economy, timeliness and elegance, programs,(67)and operating procedures whereby computers can be made us...
【简答题】This summer holiday, I went to Dalian with my family. We got there ____ (乘飞机). Dalian is a very ____ (美丽的) and modern city. On the bus, we could see ____ (各种各样的) buildings which are great. In the morn...