Keil uVision软件编译工程时，既可以发现语法错误，也能够发现逻辑错误。
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给单片机烧录程序时，通常应选择的文件是（ ）。
A. *.c
B. *.asm
C. *.a51
D. *.hex
计算机可以通过（ ）接口给宏晶公司的STC系列单片机下载（烧录）程序。
A. COM
B. LPT
C. VGA
D. HDMI
I‘m afraid we have to change the appointment. I have something important to do.
A. That’s all right.
B. It’s my pleasure.
C. I have a busy schedule.
D. I wish I could.
I just called to confirm our appointment at 10 a.m. tomorrow.
A. Sure, I’ll be expecting you at 10:00.
B. Sorry, I’ll be at a meeting at 10:00.
C. Well, I’ll be seeing Mr. Peterson at 10:00.
D. No, I’ll be in a park at 10:00.
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