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£º
Targets of known size¡ªwhen the size of the target is known£®a single image is enough to pinpoint the target¡¯s location£®
Targets of unknown size¡ªIf the exact size of a target is unknown£¬the software uses two images to triangulate the location of the target¡¤
Moving targets¡ªBy 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
1.B
2.C
3.A
4.B
5.C
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A man was bitterly envious of his neighbour£®He spent long hours in prayer£¬wanting to be to his neighbour in every aspect of life£®
One night£¬God appeared before him in a dream and said£¬¡°I am pleased with your £®Ask for a gift£® your neighbour will get the same gift in double amount£®¡±
He was glad but sad that his enemy would get a greater gift£®He requested£¬¡°God£¬ the sight in one of my eyes£®¡±
With his single eye£¬he peeped at his neighbour but was to see his neighbour's sight was not lost! Confused£¬he to God£¬¡°Why don¡¯t you keep your word?¡±
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He suddenly from his dream and was sure that it was a message from God£®Englightened by the dream£¬he went to his neighbour and begged his pardon for thinking and acting him£®They embraced each other and were good friends thereafter£®
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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(»ùÒòµÄ)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¡¯(ÀÏÄê³Õ´ôÖ¢)£®
¡°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
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