7-4[音频]
A. Internet connectivity.
B. Driverless vehicles.
C. Physical devices.
D. Big data.
7-5[音频]
AI.
B. TV.
C. PPT.
D. WIFI.
8-1[音频]
A. Please take a seat.
B. Check it out online.
C. Do it as soon as possible.
D. Get your cell phone reset.
8-2[音频]
A. I mean it.
B. Sure it is.
C. I’m with you.
D. Certainly I will.