The most important thing to be a successful blogger is to ______________.
A. Setting up a blog
B. Thinking up sth. interesting to say
C. Having a large audience
D. Finding a good website
What problems do the Weibo addicts have?
A. high level of anxiety
B. discouraged from activities
C. loss in productivity
D. All are mentioned.
单片机复位操作的主要功能是把PC初始化为（ ）。
A. 0100H
B. 2000H
C. 0002H
D. 0000H
只能采用字节寻址的数据存储器中，要将一个字节存储单元中的某一个位置“1”，应使用逻辑_______指令，并且该位的值应为_______。
A. 或 1
B. 或 0
C. 异或 1
D. 异或 0
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