Question

Researchers have developed new 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 smartphone­armed 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 cauldron’s school and cat clung 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. locate objects in the distance exactly

C. defend soldiers against their enemies

D. help biologists protect rare animals

2.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 its real­life size.

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

A. Casual.    B. Optimistic.

C. Cautious.    D. Flexible.

4.What is the best title of the text?

A. Wang Qia, a Talented Doctoral Student

B. Use Smartphones to Their Full Potential

C. Targeting and Tracking with Smartphones

D. Smartphone — Armed Soldiers on the Battlefield

Answer

1.B

2.A

3.B

4.C

【解析】

本文是一篇说明文，主要介绍了一种可以运用在智能手机上的软件，这种软件运用GDP技术能够定位远方物体并追踪移动物体运动的方向。

1.细节理解题。根据文章第一句Researchers have developed new 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.可知这种新的软件能够确定远方物体的确切位置并监视移动物体的运动方向。故B项正确。

2.推理判断题。根据文章第二段最后一句When that soldier returns from war, she can use the same software to protect her family by clocking a speeder near her cauldron’s school and cat clung the criminal on video.可知运用视频录像的方法来记录移动的物体的速度。故A项正确。

3.推理判断题。根据文章最后一段“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.”可知尽管目前这种软件收到手机硬件的限制，但这个装置会迅速改善，他们会提高GPS的准确性电池的寿命等等。以上都说明Wang Qia对这个软件的未来是很乐观的。故B项正确。

4.标题判断题。本文是一篇说明文，主要介绍了一种可以运用在智能手机上的软件，这种软件运用GDP技术能够定位远方物体并追踪移动物体运动的方向。ABD三项都只是我在的部分内容，不能涵盖全部。故C项符合中心思想。