19.
A. Larry was an idealistic dreamer.
B. Larry had a fine sense of humor.
C. Larry was going to be a great movie star.
D. Larry was broke when he met the film director.
20.
A. He was amused by Larry’s unusual way of recommending himself.
B. He thought Larry would make a good actor.
C. He was sorry for Larry.
D. He didn’t want Larry to be employed by other companies.
专用单片机已使系统结构最简化、软硬件资源利用最优化,从而大大降低()和提高可靠性。
AT89S51单片机是微处理器。
A. 对
B. 错