Question

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 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．

Answer 1

分析 本文是一篇科教类阅读，属于科普性文章．主要讲述了研究人员已经开发出新的软件，使用智能手机的GPS和成像功能，确定远处物体的确切位置以及监控运动物体的速度和方向．

解答 66：答案：B．细节理解题．根据第一段中的"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，新软件可以准确定位远距离的物体．故答案为B．
67：答案：C．细节理解题．从文章第二段的内容看，博士生王洽举例说在战场上，新软件可以集多种作用于一身，帮助士兵侦察；而当士兵从战场上返回时，她又可以使用相同的软件保护她的家人．由此可知该例子是为了说明新软件的优势．故答案为C．
68：答案：A．细节理解题．从文章倒数第二段中的"Moving targets-By taking a short video of a moving target"可知，软件计算出移动物体的速度通过一个简短的视频．故答案为A．
69：答案：B．推理判断题．通读全文，尤其是根据文章的最后一句"We expect that improvements in GPS accuracy，battery life and camera resolution will allow our software to make even more accurate observations．"可推知王洽对新软件使用前景的态度是乐观的．故答案为B．
70：答案：C．主旨大意题．通读全文内容可知，本文主要讲述的是智能手机应用程序的跟踪与定位功能，故C项为最佳标题．故答案为C．

点评 本文是一篇科教类阅读，题目涉及多道细节理解题，主旨大意题，推理判断题．做题时学生应仔细阅读原文，把握文章主要内容，联系文章上下文内容并结合所给选项含义，从中选出正确答案，一定要做到有理有据，切忌胡乱猜测．