【简答题】Watch the video and identify who is the speaker of each of the following sentences. u02v1.wmv (1) You can use trade fairs to promote your products or services. (2) What benefits can I expect if I exhi...
【单选题】There’s no question that self-driving vehicles could be an enormous benefit. The potential for safer cars means accident statistics would drop: some 94% of road accidents in the U. S. involve human er...