Researchers have developed new software using smart phones’GPS and imaging abilities that determine the exact location of distant objects as well as monitor the speed and direction of moving objects.The software could eventually allow smart phone-armed soldiers to target the location of their enemies.On the home front,the software could be used by everyone,including golfers judging distance to the green and biologists documenting the location of a rare animal without disturbing it.

“The great advantage of a Smartphone is that it provides so many tools in a single,readily available,relatively inexpensive package,”said Qia Wang,a doctoral student who led the development of the software.“For example,on the battlefield,a soldier needs a rangefinder,compass,GPS and other tools to get information before calling in an air strike.With our software,the soldier can have all those instruments in one device that can be purchased off the shelf.When that soldier returns from War,she can use the same Software to protect her family by clocking a speeder near her children’s school and catching the criminal on video.”

Wang and his colleagues developed their software to locate and track:

Targets of known size—when the size of the target is known.a single image is enough to pinpoint the target’s location.

Targets of unknown size—If the exact size of a target is unknown,the software uses two images to triangulate the location of the target·

Moving targets—By taking a short video of a moving target,the smartphone software can calculate how fast the target is moving and in what direction it is going.

“Currently,our software is limited by the physical abilities of smartphone hardware,but the devices are improving rapidly,”Wang said.“We expect that improvements in GPS accuracy,battery life and camera resolution will allow our software to make even more accurate observations.”

1..From Paragraph 1 we can know that the new software can_______.

A.determine the speed of moving objects

B.1ocate objects in the distance exactly

C.defend soldiers against their enemies

D.help biologists protect rare animal

2..The example given by Qia Wang is meant to ________________.

A.make an advertisement

B.describe the software briefly

C.show the benefits of the software

D.present the functions of smartphones

3..How does the software calculate the speed of a moving object?

A.By taking a short video. B.By locating its position.

C.By taking a single image.D.By measuring real-life size.

4..What’s Qia Wang’s attitude towards the future of the software?

A.Casual. B.Optimistic.

C.Cautious.D.Flexible

5..What is the best title of the text?

A.Qia Wang,a Talented Doctoral Student

B.Use Smartphones to Their Full Potential

C.Targeting and Tracking With Smartphones

D.Smartphone-armed Soldiers on the Battlefield

 

How far would you be willing to go to satisfy your need to know? Far enough to find out your possibility of dying from a terrible disease? These days that’s more than an academic question,as Tracy Smith reports in our Cover Story.

There are now more than a thousand genetic(基因的)tests,for everything from baldness to breast cancer,and the list is growing.Question is do you really want to know what might eventually kill you? For instance,Nobel Prize-winning scientist James Watson,one of the first people to map their entire genetic makeup, is said to have asked not to be told if he were at a higher risk for Alzheimer’(老年痴呆症).

“If I tell you that you have an increased risk of getting a terrible disease,that could weigh on your mind and make you anxious,through which you see the rest of your 1ife as you wait for that disease to hit you.It could really mess you up.”Said Dr.Robert Green,a Harvard geneticist.

“Every ache and pain,”Smith suggested,could be understood as“the beginning of the e nd.”“That’s right.If you ever worried you were at risk for Alzheimer's disease,then every time you can’t find your car in the parking lot,you think the disease has started.”

Dr.Green has been thinking about this issue for years.He led a study of people who wanted to know if they were at a higher genetic risk for Alzheimer’s.It was thought that people who got bad news would,for lack of a better medical term,freak out.But Green and his team found that there was “no significant difference”between how people handled good news and possibly the worst news of their lives.In fact,most people think they can handle it.People who ask for the information usually can handle the information,good or bad,said Green.

1.The first paragraph is meant to _________________.

A.ask some questions B.introduce the topic

C.satisfy readers,curiosity D.describe an academic fact

2.Which of the following is true of James Watson?

A.He is strongly in favor of the present genetic tests.

B.He is more likely to suffer from Alzheimer's disease.

C.He believes genetic mapping can help cure any disease.

D.He doesn’t want to know his chance of getting a disease.

3.According to Paragraphs 3 and 4,if a person is at a higher genetic risk,it is ____________.

A.advisable not to let him know

B.impossible to hide his disease

C.better to inform him immediately

D.necessary to remove his anxiety

4.The underlined part“freak out”in Paragraph 5 is closest in meaning to _____________.

A.break down B.drop out

C.leave off D.turn away

5.The study led by Dr.Green indicates that people ________________.

A.prefer to hear good news

B.tend to find out the truth

C.can accept some bad news

D. have the right to be informed

 

[1]Your vacabulary refers to the words in a language you are familiar with. Your active vocabulary contains the words you understand and use in speech and in print, and your passive vocabulary includes the words you do not use but understand. Although children learn more new words than adults, the vocabulary of an adult is not fixed and can be increased. Improve your language skills with daily exposure to new words, their pronunciations and meanings.

[2]______. The more often you read, the faster your vocabulary can grow. Choose reading material that is slightly above your level and keep a dictionary with you to look up words you do not know.

[3]Find a new word every day.If you do not encounter an unfamiliar word in your daily reading,use your dictionary to search for one.

[4]Learn the correct definition and pronunciation for each new word you encounter.Pronunciation is as important as definition because in order to add a word to your active vocabulary,you must be able to use it in speech.

[5]Explain the meaning of the word so that you can connect it to something memorable.Use imagery and personal relevance(关联).If you have just learned that the word“obstinate”means stubborn and unyielding,think about the neighbor who will not lend you his car.Imagine him shaking his head,and think of him as obstinate in his refusal.

[6]Use your new word in speech and in writing.Tell a friend about your boss obstinately refusing to reschedule your vacation time.E-mail your sister about how your cat is obstinate about sleeping on your pillow.The first time you use a new word in speech it may seem clumsy and forced,but the more you use it,the more fluent you will become in its use.Soon it will be a regular part of your active vocabulary.

[7]Tell everyone you are trying to increase your vocabulary.Encourage them to ask you what your latest word is,or to ask for the definition of a new word you have used.The more you explain the meaning of a word to someone,the more likely you are to remember it.

1.What is the passage mainly about?(no more than 6 words)

___________________________________________________________________________

2.What’s the purpose of the example of the word“obstinate”in Paragraph 5?(no more than 20 words)

___________________________________________________________________________

3.Fill in the blank in Paragraph 2 with proper words.(no more than 4 words)

___________________________________________________________________________

4.What should we do if there is no unfamiliar word in our daily reading?(no more than 7 words)

____________________________________________________________________________

5.What does the underlined word“it”in Paragraph 4 probably refer to?(no more than 3 words)

____________________________________________________________________________

 

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