If you are in a town in a western country, you'll often see people walking with their dogs. It is still true that a dog is the most useful animal in the world. But the reason why one keeps a dog has changed Once upon a time, a man met a dog and wanted it to help him in the fight against other animals, and he found that the dog listened to him and did what he told him to. Later people used dogs for the hunting other animals, and the dogs didn't eat what they got until their master agreed. So dogs were used for driving sheep and guarding chicks. But now the people in the towns and cities do not need dogs to fight other animals. Of course they keep them to frighten thieves, but the most important reason is that people feel lonely in the city. For a child, a dog is his best friend when he has no friends to play with. For a young wife, a dog is her child when she doesn’t have her own. For old people, a dog is also a child when their real children have grown up and left. Now people do not have to use a dog, but they keep it as a friend, just like a member of the family.
【小题1】_______are more useful than a dog in the world.

A.No other animalsB.Some animalsC.Many animalsD.A few animals
【小题2】In the past people kept dogs because dogs _________.
A.could fight against other animalsB.met the people
C.did not eat other animalsD.helped and listened to people
【小题3】Now people keep dogs in the cities because dogs_____.
A.fight other animalsB.are lonely
C.are like their friendsD.are afraid of the thieves
【小题4】A dog can be _____.
A.a child's friend onlyB.a young woman's son
C.old people's real childD.everybody's friend
【小题5】So a dog will __ in a family.
A.always be usedB.not be useful
C.still fightD.always be a good friend


D
Have you ever noticed what happens to an idea once you express it? Just talking about it or writing it down causes you to make it clear in your own mind. How can you use this to increase your brain power? Start writing.
By putting thoughts into words, you are telling yourself the logic behind what you think, feel, or only partly understand. Often, explaining a thought is the process of understanding. In other words, you increase your brain power by exercising your “explain power”.
Another benefit of writing is that it helps you remember. Many, if not most, highly productive people are always taking notes. You can try keeping it all in your head, but if you keep a journal(日志) of your ideas the next time you’re working on a big project, you’ll probably have more success.
Want to understand a topic? Write a book about it. That’s an extreme example, but if you are learning something new, write a letter to a friend about it, and you will understand it better. Want to invent something? Write an explanation of the problem—why you want to solve it, and why it is worth solving, and you’re half way there.
Writers don’t always write because they clearly understand something beforehand. Often, they write about something because they want to understand it. You can do the same. Writing will help bring you to an understanding. Give it a try.
47.What would be the best title for the passage?
A.A Way on How to Write
B.Increase Your Brain Power Through Writing
C.Brain Power Helps Improve Your Writing
D.How to Start Your Writing
48.According to the passage, writing can help you a lot EXCEPT_______.
A.to increase your brain power      B.to improve the ability to remember
C.to develop your interest in study   D.to strengthen the understanding of a topic
49.The underlined sentence “you’re half?way there” in the fourth paragraph means that_______.
A.you are already successful
B.there’s a long way for you to go to reach your goal
C.you are left wondering what to do
D.you have been on the way to success
50.Which of the following statements is TRUE?
A.Writing can cure people of their brain disease.
B.People who can keep all thoughts in mind are more likely to succeed.
C.Writing a book about one topic is the only way to understand it.
D.The more you write, the more logical you will be.


C
Not even Dan Brown and his Da Vinci code—breakers(密码破译者)dared deal with the mystery of Mona Lisa,s smile.But Nicu Sebe,a computer expert the University of Amsterdam,the Netherlands,did.He used’emotion recognition’software to process the famous painting and found Mona Lisa happy(83 per cent)and slightly disgusted(厌烦的)(9 per cent).
Faces show emotions. Psychology,computer science,and engineering researchers are joining forces to teach machines to read expressions.If they succeed,your computer may one day“read”your mood.Machines equipped with emotional skills could also be used in teaching,gaming,mind-reading,etc.
“Mind Reader”,a system developed by Rosalind Picard at MIT(the Massachusetts Institute of Tech’nology)in the US, uses input from a video camera to do real—time analysis of facial expressions. It reports on whether you seem“interested”or“agreeable”or if you’re“confused”.The system can help people recognize others’emotions.Picard says this means we could teach a machine to be as sensitive as a human.In fact,a machine can be even smarter than people since it can tell if a person is lying or just“performing”by analyzing one’s facial movements.
Jeffrey Cohn,a psychologist at the University of Pittsburgh,uses the Facial Action Coding System to recognize human emotions.The system sorts more than 40 action units(AUs)of the face to tell people’s real emotions.He studied a videotape of a criminal who said to be sad about the murder of several family members and tried to pin the blame on someone else.But Cohn saw no real sadness in the woman’s face.
Sadness is a group of AUs that is difficult to do at the same time.You have to pull down the woman’s of your lips while bringing your eyebrows together and raising them.What the woman did was raise her cheeks to make a lip cud(撇嘴)。Her brows stayed smooth.
64.The best title of this passage is“ ________ ”.
A.The emotion on your face                    B.Look at your face
C.Your face tells a story                          D.Telling a lie
65.The missing sentence“This means,even though your mouth lice,your face doesn’t,and the machine will know it all. ”should be put at the end of ___________.
A.Paragraph 2   B.Paragraph 3      C.Paragraph 4     D.Paragraph 5
66.How many facial emotion analyses are mentioned in this passage?
A.Four.               B.Three.              C.Two.         D.One
67.The underlined word“it”refers to________.
A.MIT                                 B.the video camera
C.one’s face emotion            D.the real—time analysis

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