单选题

Questions 14-17 are based on a talk between a student and his advisor

单选题 What are the speakers mainly discussing?

A、 The man does research for his chemistry paper．
B、 The way to use a computer can affect one's eyes．
C、 Why does the man need new glasses?
D、 The computers are useful for research．

【正确答案】 B

【答案解析】[听力原文] 14-17 W: Hi．Jerry．How is your chemistry paper going? M: It's coming along．But I've been staring at this computer screen for hours and my eyes hurt． W: Yeah．Doing that can make your eyes really dry and fired．You should take a break． M: I can't．I have to get this paper written．It's due tomorrow． W: You know, I read about computers and eye problems recently．The article says that they are usually caused by not blinking your eyes enough． M: Blinking?I thought I just needed new glasses． W: No，when you blink，the movement of closing and opening your eyes, even though it happens really fast, helps moisten your eyes．It's the lack of moisture that causes the problem． M: That makes sense．But what do I have to do with the computer? W: People who use computers tend to stare at the monitor and blink less often than they normally would．That leads to dry irritated eyes． M: Well．that's certainly how I feel now．They really hurt．I wonder if using some kind of eye-drops will make them feel better． W: That might help．But the best prescription is to take a break and rest your eyes. M: OK．Let's go to get some coffee．I can finish this later tonight． [解析] 对话从男士使用电脑完成化学课的论文开始，谈到长时间盯着电脑屏幕对眼睛会造成伤害，然后围绕电脑和电脑对眼睛的影响展开，另外对话中反复出现的关键句子和词语“staring at this computer screen”， “my eyes hurt”，“Doing that can make your eyes really dry and tired．”， “computer and eye problems”以及不断使用的关键词“blink eyes”进一步说明，对话是在谈沦使用电脑的方式对眼睛产生的影响，因此正确答案为[B] 选项。

单选题 Why is blinking important, according to the conversation?

A、 Ithelps to keep the eyes fired．
B、 It helps to keep the eyes moist．
C、 It causes eyes to move fast．
D、 Ithelps to clean the eyes．

【正确答案】 B

【答案解析】[解析] 对话中女士提到了眨眼的重要性“when you blink, the movement of closing and opening your eyes，even though it happens really fast, helps moisten your eyes．”，由此可知[B] 选项“眨眼有助于眼睛保持湿润”为正确答案。

单选题 What causes eye problem when using a computer?

A、 Blinking eyes less．
B、 Using fewer eye-drops．
C、 Moving eyeballs fast．
D、 Concentrating on work．

【正确答案】 A

【答案解析】[解析] 由对话中我们得知，眨眼有助于眼睛保持湿润“when you blink，the movement of closing and opening your eyes，…．helps moisten your eyes．”，而眼睛问题正是由于眼睛干燥引起的“It's the lack of moisture that causes the problem．”，由此可以推断出，眼睛眨的少，会引起眼睛干燥，眼睛干燥引发了眼H青的不舒服。对话中进一步提到的“People who use computers tend to stare at the monitor and blink less often than they normally would．That leads to dry irritated eyes．”，也证实了正确答案为[A] 选项。

单选题 What can we learn about Jerry from the conversation?

A、 He has finished his chemistry paper．
B、 He has no interest in studying．
C、 He knows a lot about computer and eye problems．
D、 He has been working for a long time．

【正确答案】 D

【答案解析】[解析] 由对话开始部分男士的话语“I've been staring at this computer screen for hours and my eyes hurt．”可知，男士在电脑上工作了很长时间了，因此应选择[D] 选项。