3．Researchers have developed a new kind of software using smartphones'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 smartphone-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 Wang Qia，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 a target is known．a(chǎn) 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．"
66．From Paragraph 1 we can know that the new software canB．
A．determine the speed of moving objects
B．locate objects in the distance exactly
C．defend soldiers against their enemies
D．help biologists protect rare animal
67．The example given by Wang Qia is meant toC．
A．make an advertisement
B．describe the software briefly
C．show the benefits of the software
D．present the functions of smartphones
68．How does the software calculate the speed of a moving object？A
A．By taking a short video．
B．By locating its position．
C．By taking a single image．
D．By measuring its real-life size．
69．What's Wang Qia's attitude towards the future of the software？B
A．casual．
B．optimistic．
C．cautious．
D．flexible．
70．What is the best title of the text？C
A．Wang Qia，a Talented Doctoral Student
B．Use Smartphones to Realize Their Full Potential
C．Targeting and Tracking with Smartphones
D．Smartphone-armed Soldiers on the Battlefield．
分析 本文是一篇科教類閱讀，屬于科普性文章．主要講述了研究人員已經(jīng)開發(fā)出新的軟件，使用智能手機(jī)的GPS和成像功能，確定遠(yuǎn)處物體的確切位置以及監(jiān)控運(yùn)動(dòng)物體的速度和方向．
解答 66：答案：B．細(xì)節(jié)理解題．根據(jù)第一段中的"determine the exact location of distant objects""allow smartphonearmed soldiers to target the location of their enemies"以及"biologists documenting the location of a rare animal"可知，新軟件可以準(zhǔn)確定位遠(yuǎn)距離的物體．故答案為B．
67：答案：C．細(xì)節(jié)理解題．從文章第二段的內(nèi)容看，博士生王洽舉例說在戰(zhàn)場(chǎng)上，新軟件可以集多種作用于一身，幫助士兵偵察；而當(dāng)士兵從戰(zhàn)場(chǎng)上返回時(shí)，她又可以使用相同的軟件保護(hù)她的家人．由此可知該例子是為了說明新軟件的優(yōu)勢(shì)．故答案為C．
68：答案：A．細(xì)節(jié)理解題．從文章倒數(shù)第二段中的"Moving targets-By taking a short video of a moving target"可知，軟件計(jì)算出移動(dòng)物體的速度通過一個(gè)簡(jiǎn)短的視頻．故答案為A．
69：答案：B．推理判斷題．通讀全文，尤其是根據(jù)文章的最后一句"We expect that improvements in GPS accuracy，battery life and camera resolution will allow our software to make even more accurate observations．"可推知王洽對(duì)新軟件使用前景的態(tài)度是樂觀的．故答案為B．
70：答案：C．主旨大意題．通讀全文內(nèi)容可知，本文主要講述的是智能手機(jī)應(yīng)用程序的跟蹤與定位功能，故C項(xiàng)為最佳標(biāo)題．故答案為C．
點(diǎn)評(píng) 本文是一篇科教類閱讀，題目涉及多道細(xì)節(jié)理解題，主旨大意題，推理判斷題．做題時(shí)學(xué)生應(yīng)仔細(xì)閱讀原文，把握文章主要內(nèi)容，聯(lián)系文章上下文內(nèi)容并結(jié)合所給選項(xiàng)含義，從中選出正確答案，一定要做到有理有據(jù)，切忌胡亂猜測(cè)．
