五、阅读理解
Very often, when we see young people sitting there, looking at the screen of a mobile phone and smiling, we may think nothing is wrong. But when we come to the question “How much time do they actually spend on media daily?”, the answer is surprising—young people spend about nine hours every day using media and this is only the media used for enjoyment.
Today’s young people seem to have become crazy multitaskers. They often use mobile phones when doing other activities. Some watch TV when doing homework, some text, and some others listen to music.
But what do young people think of this? A university in the UK did a survey among 400 students. It showed that three fourths of them believed watching TV or texting had no influence on their schoolwork. Half of them thought using social media made no difference.
However, studies have given a different answer—media multitaskers did worse in tests.
A study in Japan shows that those who text a lot have more trouble sleeping and do worse in their study.
A similar study in the US also found that students who texted when doing schoolwork had lower grades than others. According to the research, if a kid uses social media a lot, especially at night, he or she will sleep worse and feel more nervous and depressed. Young people stay up late to check messages and information. They may also be woken up by messages they get. The light from a screen could also influence their sleep.
Some other studies also show that children who use media at night go to bed later, get fewer hours of sleep each week, and become sleepy more easily during the daytime.
()1. What kind of people does the underlined word “multitaskers” in Paragraph 2 refer to?
A. People who can do different things at the same time.
B. People who can do only one thing at a time.
C. People who have much work to do every day.
D. People who have many different mobile phones.
()2. According to the survey in the UK, how many students believed watching TV or texting had no influence on their schoolwork?
A. 400.
B. 300.
C. 200.
D. 100.
()3. What does the author mainly want to tell us?
A. Social media is becoming very popular among young people.
B. Too much media time has a bad influence on life and study.
C. The use of social media has both good points and bad points.
D. Mobile phones are useful for learning at school.
()4. Where can we read this text?
A. In a storybook.
B. In a travel guide.
C. In a school notice.
D. In a science magazine.

1.A 2.B 3.B 4.D

【分析】
这是一篇关于青少年媒体使用的科普类阅读理解，包含4道不同题型的题目。第1题是词义猜测题，需结合上下文语境推断生词含义；第2题是细节理解题，需定位原文数据并计算；第3题是主旨大意题，需梳理全文把握作者核心观点；第4题是文章出处题，需根据内容判断所属类型。
【解析】
1. 词义猜测题：根据第二段“They often use mobile phones when doing other activities. Some watch TV when doing homework, some text, and some others listen to music.”可知，年轻人在做其他活动时同步进行多种行为，因此“multitaskers”指能同时做不同事情的人，选A。
2. 细节理解题：根据第三段“英国某大学对400名学生做调查，四分之三的学生认为看电视或发短信对学业无影响”，计算400×3/4=300，选B。
3. 主旨大意题：文章先指出年轻人每天花约9小时用于娱乐媒体，再说明其多任务使用情况，随后通过多项研究表明过多媒体时间对青少年的学习、睡眠、情绪等有负面影响，核心观点是过多媒体时间对生活和学习有坏影响，选B。
4. 文章出处题：文章围绕媒体使用对青少年的影响展开，属于科普研究类内容，最可能出现在科学杂志中，选D。
【答案】1.A 2.B 3.B 4.D
【知识点】阅读理解词义猜测、阅读理解细节理解、阅读理解主旨大意、阅读理解文章出处
【点评】本题为科普类阅读理解，题型全面，要求学生具备定位原文信息、梳理文章逻辑的能力，整体考查学生的阅读理解综合能力。
【难度系数】0.6

读后词汇拓展 猜出画波浪线单词的词性和中文意思，并收入自己的小词典。
crazy

adj.疯狂的

【分析】首先回忆单词crazy的语法用法，它常用来修饰名词或在系动词后作表语，符合形容词的语法特征，据此确定其词性，再结合常用释义得出中文意思。
【解析】单词crazy在句中可作定语修饰名词（如a crazy man）或作表语（如He is crazy），属于形容词（缩写为adj.），中文意思是“疯狂的”。
【答案】adj.疯狂的
【知识点】英语词汇、形容词词性
【点评】本题为基础词汇拓展题，考查常用形容词的词性与词义，属于英语学习的基础内容，难度较低。
【难度系数】0.9