题目内容

A: May I ________ my friend Lily? She is from Class One.B: Oh, hello, Lily. I am Jack from Class Two.

A. introduced
B. introduce
C. introduction
D. introductory

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A: Hello, Zhang. How can I _____ you?B: You can friend me on Wechat.

A. conduct
B. contact
C. content
D. contract

A: Hey, may I have your Wechat ID, please?B: _______. Scan my QR code(二维码) here on the phone.

A. No way
B. Sure
C. Thank you
D. I am sorry

数字电路采用二进制数，抗干扰能力（）。

A. 强
B. 弱

高电平使用逻辑信号（）来表示

A. 0
B. 1
C. 2
D. 3