【创新设计】(广东专用)高中英语 Unit 4 Cyberspace Period Two Le

Unit 4 Cyberspace Period Two Lesson 2 Websites & Lesson 3 Virtual Reality 课时精练（北师大版必修2，广东专用）
时间：30分钟
Ⅰ.语法填空
阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

A new study shows that sleep protects memory.People who have a good night's sleep have a __1__memory than people who sleep poorly.
Researchers at Harvard Medical School chose 48 people__2__(age) between 18 and 30.They all had normal, healthy sleep routines and were not taking any medications(药物治疗)．They were asked__3__(learn)a list of 20 pairs of words and then were tested 12 hours later.
These people were divided__4__ a wake group and a sleep group.The wake group__5__(teach)the words at 9 a．m. and then tested at 9 p．m., after being awake all day.The sleep group learned the words at 9 p．m., went to sleep, and were tested at 9 am.
Researchers found that the sleep group___6__correctly identify(识别)three­quarters of the word pairs, __7__the wake group could only correctly identify one­third of the word pairs.
“__8__results provide important insights into__9__the sleeping brain interacts with memories.It appears to__10__(strong) them”， said Jeffrey Ellenbogen, one of the scientists who did the research.
答案及解析
1．better [由than可知此处要用比较级，由第四段的实验结论可知：睡眠好的人记忆更好，故填better。

]
2．aged [过去分词作定语，相当于who were aged.]
3．to learn [ask sb to do sth为固定搭配。

]
4．into [divide...into为固定搭配。

]
5．were taught [主语是被教的对象，要用被动语态。

]
6．could [与下文的“the wake group could only correctly identify”相对应。

] 7．while [文中两组数据对比，故用while(然而)。

]
8．These/The [特指上文的实验结果。

]
9．how [句意：这些结论让我们了解到睡眠是如何影响记忆的。

对应下文“I t appears to strengthen them”。

]
10．strengthen [由appear to可知这里要用动词不定式。

]
Ⅱ.阅读理解
A
Imagine entering a very large, unfamiliar building and you have no idea how to get to an office you are looking for. But then, as you're standing there, a nearly silent balloon floats over to you and speaks to you. It asks you where you want to go. You tell it, and then it simply says “follow me” like a child's game and begins to float off in direction of your destination. It keeps going, as you follow，leading you to where you want to go.
The guide works itself, without any help from any human being. It greets people as they arrive in the building, speaks to them，processes their requests and then guides them to the destinations.
The balloon has two tiny fans to help keep it floating and to provide just a touch of lift. On board is a wireless receiver for receiving directions from a computer that directs the fans and sensors(传感器)that let it know where objects are around it.
The idea of such a simple robot is one that has been on the minds of scientists for years, and has been mentioned in novels many times. Today the iPhone does something similar but has to be connected to the Internet which is sometimes difficult. This is why this little balloon might be the wave of the future—because it is so much easier to follow!
11．The balloon mentioned in the passage is used to________．
A．lead the way
B．bring people joy
C．catch the thieves
D．welcome the visitors
解析推理判断题。

根据第一段描述的情景可推知，这个气球是用来引路的。

答案 A
12．The underlined word “processes” in Paragraph 2 means “________”．A．asks for B．refuses
C．deals with D．repeats
解析词义猜测题。

根据画线词所在句中提到的一系列动作可知，它会招呼人们，和人们讲话，处理人们的要求，然后指引人们到达目的地。

由此可见，process的意思与deal with 最为接近。

答案 C
13．The balloon gets to know the position with the help of________．
A．two tiny fans B. sensors
C．a wireless receiver D. human beings
解析细节理解题。

根据第三段最后一句中的“...sensors(传感器)that let it know where objects are around it.”可知，它是凭借传感器来判断位置的。

答案 B
14．We can learn from the last paragraph that________．
A．the idea of such a robot is new
B．such a robot is difficult to make
C．the technology has been widely used
D．the technology may become popular in the future
解析细节理解题。

根据最后一段最后一句可知，该技术可能会在未来得到普及。

答案 D
15．Where is the passage most probably taken from?
A．A science news report.
B．A newspaper ad.
C．A science novel.
D．A storybook.
解析推理判断题。

本文主要介绍了一种能够为人们引路的机器人，属于科普范畴，故选A 项。

答案 A
B
It is a common fear among users of Facebook and other social media around the world—how to deal with a friend request from your boss or employee.
A survey released on Thursday found that 56 percent of Americans say it is
irresponsible to be friends with a boss and 62 percent say it is wrong to be friends with an employee.But 76 percent believe it is acceptable to be friends with a workplace peer，according to the survey of 1,000 people by Liberty Mutual's Responsibility Project.
“When the roles change what do you do then？Do you unfriend someone if they have now been promoted to be your boss or if you' re now their boss，” said researcher Kelly Holland.“We get into some really sticky situations there in terms of what people will think is responsible，” she said.When using social media at work,73 percent say it is not appropriate to update your Facebook status,82 percent say you should not upload photos,72 percent believe tweeting is wrong and 79 percent say it is not acceptable to watch online videos.Yet 66 percent say it is fine to check your personal email while at work.
“When people focus on responsibility，they know what the responsible thing is to do but whether they are doing that in practice or not is a different story，” s aid Holland.
Americans are split on whether companies should review the social media profiles of job candidates with 52 percent saying it is appropriate and 48 percent saying it is unacceptable.Social media can also lead to some difficult decisions when it comes to family and relationships.Sixty percent of those polled say that it is“completely acceptable”to unfriend an ex­boyfriend or ex­girlfriend.More than 40 percent of parents believe it is irresponsible to post photos of children online.Thirty­one perc ent monitor their children's Facebook accounts and almost 70 percent are friends with their children on Facebook or MySpace.But 72 percent limit the time their children spend on social media networks.
The poll was taken between January 12～15.
16．The text is mainly about________.
A．social，family and relationships
B．ways of making friends
C．not using social media at work
D．action of responsibility
答案 D [主旨大意题。

通过全文可知本文是“自由互助责任项目”围绕什么是负责任的行为所做的四项调查情况反馈，故答案D“负责任的行为”是本文所主要讲述的内容。

] 17．The underlined word “Facebook” in the first paragraph refers to________. A．a book about face
B．an Internet site of making friends
C．a broadcasting media
D．a newspaper or magazine
答案 B [词义猜测题。

由下文的关键词：...social media，...be friends with a boss 推出这是一家社交网站名字“脸谱网”。

]
18．How many surveys have Liberty Mutual's Responsibility Project done?
A．2. B．3. C．4. D．5.
答案 C [细节理解题。

“自由互助责任项目”一共做了四项调查：(1)第一、二段对加老板或下属为好友的调查；(2)第三段：When using social media at work对于在工作时间使用社交媒体这一问题的调查；(3)第五段：Americans are split on whether companies should review the social media profiles of job candidates，对于用人单位是否应该查看应聘者在社交网站上的个人资料的问题的调查；(4)第五段：Social media can also lead to some difficult decisions when it comes to family and relationships.在涉及家庭和感情关系的问题上的调查。

]
19．Which of the following is TRUE according to the text?
A．Thirty one percent of parents keep watching on their children's Facebook accounts. B．Forty eight percent agree to review the social media profiles of job candidates. C．Eighty two percent say it isn't appropriate to upload photos at work. D．Seventy six percent believe it is acceptable to be friends with an employee. 答案 A [细节判断题。

A项在最后一段的倒数第四行找到．..monitor their children's Facebook accounts.“31%的父母监视孩子的Facebook账户”是正确选项；B项在最后一段的第一行：...review the social media profiles of job candidates“48%的人认为不可接受”排除；C项在第三段：...82 percent say you should not upload photos，“82%的人认为不应该上传照片”；D项第二段的第四行：...76 percent believe it is acceptable to be friends with a workplace peer.“76%的人认为加普通同事为好友可以接受。

”] 20．What was the writer's attitude towards the result of survey? A．Defensive. B．Critical.
C．Objective. D．Doubtful.
答案 C [观点态度题。

从文章整体看，作者公布了“自由互助责任项目”所做的调查，作者没有加入任何分析和评论，故答案为C，作者仅仅是客观地公布调查结果。

]。