F: Hi, Tony. Have you finished reading these articles? ,M: Yes, but my eyes feel uncomfortable after staring at the computer screen for hours. ,F: I've read an article about eye problems recently. It says that people usually blink less when they use computer, so they may always feel tired and dry after using computers. ,M: That is what I am doing. And I am suffering from dry eyes. ,F: It is so common for people who have eye problems. ,M: But what does it have to do with the computer? ,F: The article found that people blink 22 times a minute in average when relaxed, but just 7 times a minute while staring at things on a computer screen. ,M: Really? That's quite a difference.
(A) F: Yes, when we stare at the computer, our eyes will blink five times more than usual,we will blink 27 times a minute. (B) F: Yes, although people blink only 7 times a minute when staring at the computer, they may feel less dry after using computers. (C) F: Excuse me, could you repeat the question? (D) F: Yes, I never knew that people blink only 7 times in a minute when staring at the computer. That’s a lot fewer than usual.
D