F: Our guest today is Dr. Lia Kwan. Dr. Kwan works with computer related injuries and problems. Dr. Kwan, do you see more computer-related problem these days? ,M: Oh, definitely yes. People are doing more and more with computers and that means more physical problems. ,F: So what can we do? ,M: Well, how you sit at the computer is very important. First, have a good chair. It should support your back well. ,F: OK, a good chair. ,M: And also your feet should be flat on the floor when you're sitting. You shouldn't cross your legs. ,F: OK. I don't always keep my feet flat on the floor at the computer. ,M: I know, it's hard sometimes. Anyway, you shouldn't sit too close to the screen either. ,F: Is half a meter away enough? ,M: Not exactly. You should sit about an arm's length away. ,F: What about the keyboard? ,M: The position of arms and hands should be relaxed on the keyboard. ,F: That's really helpful. Another advice? ,M: Yes, that all about sitting. The other thing is about not sitting. You shouldn
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: So we should remember that a good chair enables people to keep their feet flat on the floor and people are doing less and less with computers. (C) F: So it is true that there are not so many physical problems despite the wide use of computers. (D) F: So although people are doing less and less with computers, that is true that people should avoid sitting in front of computers for too long without walking around.
A