北师大版（2019）必修二 Unit 4 Information Technology 单元限时作业（Word版含答案）

单元限时作业
阅读理解
Before the discovery of DNA profiling (分析) in the 1980s, fingerprints were the easiest way to solve serious crimes. It's believed that each one of us has our own unique fingerprints. But did you know that our fingerprints could actually reveal a lot more about us than just our identity
According to Melanie Bailey of The Conversation, fingerprints can show lifestyle and environment, eating habits, possible medical problems and even the job of a person.
So how can we figure all this out from just a simple fingerprint Well, a fingerprint is formed when a finger touches a surface. Most fingerprints can’t be seen to the naked eye (裸眼) and require a chemical development process in order to make them visible. Stuck between the ridges (隆起的纹路) of a fingerprint, however, are substances (物质) that can tell a story about who we are. Things like traces of sweat, blood, and food reveal a lot of information about us --what we've touched, what we've eaten and even what drugs we've taken.
Besides, its use could be much wider. For example, it may be helpful in the future to doctors treating their patients. A fingerprint check may also tell a doctor whether a patient is properly taking medicine. In the treatment of some of the most serious illnesses, taking proper medicine is important.
In the future, fingerprint science can be used by the police and help doctors keep us in the best possible health.
Fingerprints may not show one’s_________.
A, lifestyle B, beauty C, eating habits D, medical problems
What can make the fingerprints tell a story
A, Things stuck between the raised lines. B. The chemical development.
C, A finger touching a surface. D. The eyes of scientists.
In the future, the doctor may know patients through__________.
A, a drug test B, a fingerprint check C, a blood test D, a health check
What is the main idea of the text
Fingerprints are helpful to the police.
Fingerprints keep us in the best possible health.
Fingerprints can tell much information about us.
Fingerprints can be used in treatment in the future.
7选5
People tend to become more personal and hide less of themselves when using email . Researchers from Open University in Britain have found in a recent study that there are good reasons for this .
The team of researchers asked 83 pairs of students , all strangers to each other , to solve a problem . They had to discuss this question : ______1______The pairs of students had to talk over the problem either face to face or by computers . Dr. Johnson said , “They told their partners four times as much about themselves when they talked over the Internet as when they talked face to face . When the computers were fitted with cameras so that students could see each other , this limited the personal side of the conversation.”
_______2______ It was mainly about things such as where they went to school, or where they used to live . But some students discussed their love stories , and personal childhood experiences .
Dr. Johnson believes that emailing encourages people to focus on themselves.______3______ “If you cannot see the other person, it becomes easier to talk about yourself . This is because you are not thinking what the other person is thinking of you. So emailing has become the modern way of talking,” said Dr. Johnson. ______4______ “In the 19th century people started to use the ‘telegraph’ to communicate. Now the same kind of thing has happened and people ended up speaking more freely.”
Dr. Johnson thinks that e-mailers need to know about these effects of emailing, especially when they start work in a company. _______5______
Love stories are a popular choice.
However, this style of talking is not entirely new.
Generally, the information was not extremely personal.
The more personal information you give, the more friends you can make.
And when they do this, they become more open, especially if there are no cameras.
If only five people in the world could be saved from a world disaster, who should they be
If they didn’t know about it, they could find themselves saying more abut themselves than they wanted to.
完形填空
One of my favourite shows is that Mr Bean has a meal at a fancy restaurant. In the show, after being served at his table, Mr Bean takes out a___1____, writes a few words on it, signs his name, puts it into an envelop and____2___it on the table. After a moment, he looks at the___3____but his time he looks surprised, as if he did not know it was there. He opens it to find a birthday card and delightedly puts it on the table for everyone to see.
When he looks at the___4____, an astonished look quickly___5____on his face. He takes all___6____out of his pockets, counts it and puts it in a saucer(茶托). He then looks from the menu to the money with___7____until he finds one thing that makes him smile. He___8____a dish called “steak tartare”. When the dish arrives, he is___9____to discover that “steak tartare” is___10____raw(生的) hamburger meat. He makes an attempt to eat it, but it is___11____, from the look on his face, that he finds the taste really terrible. He cannot___12____his feelings, except when the waiter asks whether everything is OK. He smiles and nods____13___that everything is fine. When no one is looking, however, he___14____himself hiding the raw meat anywhere he can reach, inside a sugar bottle, a tiny flower vase and under a plate. He becomes so disappointed in the end that he___15____hides some inside the purse of a woman sitting near him and throws some under the seat of the restaurant’s violinist!
I like to watch Mr Bean on TV but I wouldn’t want to meet someone like him in real life.
A. magazine B, book C, card D, wallet
A, throws B, places C, removes D, spreads
A, waiter B, watch C, envelope D, table
A, customers B, tablecloth C, surroundings D, menu
A, appears B, grows C, turns D, looks
A, cards B, money C, bills D, keys
A, satisfaction B, care C, confidence D, concern
A, buys B, orders C, washes D, breaks
A, shocked B, pleased C, moved D, frightened
A, mostly B, indeed C, actually D, nearly
A, doubtful B, sure C, clear D, likely
A, hide B, express C, prevent D, explain
A, admitting B, recognizing C, indicating D, realizing
A, pretends B, helps C, prepares D, busies
A, rather B, almost C, exactly D, even
语法填空
A fantastic new challenge sweeping Instagram has seen people ____1____(photo) of themselves
apparently having fallen from boats, cars and even planes.
The Falling Stars Challenge, which_____2___(begin) in Russia, invites participants to share their best fake fall and recommend their friends to do the same, and people have been going to make their falls as dramatic as possible. At first, the Falling Stars Challenge was____3____(wide ) regarded as a way for the wealthy____4_____(show) off their possessions. People were photographing themselves falling from cars, boats and even their own private jets,_____5____(lie) face down with luxurious jewellery, expensive items from high-end brands surrounding them.
However, as the challenge spread, it transformed from being a way of showing off to a creative way to show____6____people consider important in their lives. The social media craze soon made____7____(it) way to Weibo, China's social media platform. Posts with the Falling Stars tags have been seen more than 1.37 billion times. A major difference in the Chinese version of the challenge____8____(be) that professionals from different industries participated to show their daily routine. These include a firefighter in front of a row of fire trucks and____9____officer at an emergency call centre on the ground with documents thrown____10____all directions.
应用文写作
假定你是学生会主席李华，你校最近组织了一个乒乓球俱乐部。请你根据下列提示，给你的朋友John写一封电子邮件，邀请他加入你们的俱乐部。 要点：1.活动目的 2.时间，地点 3，活动内容 注意：1，词数80左右 2，参考词汇：球拍racket
Dear John,
I’m Li Hua, president of the Students’ Union of our school. I’m writing_____________1___________(邀请你加入) our Table Tennis Club(TTC).
________________2________________(为了给我们学生提供更多机会) to play table tennis and make our school life colourful, the TTC in our school is to open next week. ________________3________________(它持续一个半小时)(4:30pm--6:00pm) on Wednesdays and Fridays. ______________________4_______________________(成员将在学校体育馆集合) and then the coach will teach us____________________5___________________(如何掌握乒乓球的技巧) and give us guidance on our practice. I know_____________________6___________________(你对它很感兴趣)，so I think joining the club can suit your taste.
________________7________________(我们所有人都期待你的到来).
Yours,
Li Hua
答案
阅读理解
1-4 BABC
7选5 FCEBG
完形填空
1-5CBCDA 6-10BDBAC 11-15CACDD
语法填空
1, photos 2, began 3, widely 4, to show 5, lying
6, what 7, its 8, is 9, an 10, in
应用文写作
1, to invite you to join 2, In order to provide more opportunities for us students
3, It lasts an hour and a half 4, Members will gather at the school gym
5, how to master the table tennis skills 6, you take a great interest in it/you are very interested in it
7, All of us are expecting you to come/looking forward to your arrival