【单选题】What is the writer's purpose?
A.
To inform readers who don't have much money about ways they can travel
B.
To tell readers about some of the best sightseeing tours in the world
C.
To show readers that you don't have to travel far from home to have fun
【单选题】信息传递存在多样性,下列信息中()不属于信息传递多样性的体现。
【判断题】反相与反向的功能相同,快捷键为Ctrl +I。
【简答题】绪论5 例题.ppt 绪论4例题.ppt