首页
登录
职称英语
[originaltext]Lionfish are known for their beauty and unusual look. But lionfis
[originaltext]Lionfish are known for their beauty and unusual look. But lionfis
游客
2023-08-07
61
管理
问题
Lionfish are known for their beauty and unusual look. But lionfish are also poisonous, with extremely long and separated spines to carry and shoot poison. The native environment for lionfish includes the South Pacific and Indian Ocean. However, sea experts say lionfish were at some time released into the Atlantic Ocean, likely by people who had kept them in tanks. Lionfish are currently considered a great threat to coral reefs and related sea life in coastal waters of the southeastern United States and Caribbean. Scientists say the fish is a top predator that competes for food and space with native fish in the area.
Now there is a new solution for fighting back. University researchers are developing an underwater robot to hunt down, kill and collect lionfish. A student-led team at Worcester Polytechnic Institute in Massachusetts developed the robot. The team recently demonstrated the device and is continuing to test and make changes to it. The team says that the robot is designed to recognize the lionfish, chase it and shoot the animal with a spear, which then separates from the robot and floats the fish to the surface for collection. Craig Putnam is a computer science professor at Worcester Polytechnic Institute and a director of the school’s Robotics Engineering Program. He says the robot was built to simplify the process of hunting down and collecting this aggressive fish. Putnam said his team trained the robot system by showing it thousands of images of lionfish in different colours, from many directions and under different lighting conditions. The robot can correctly identify lionfish about 95% of the time, he added.
Questions 12 to 15 are based on the passage you have just heard.
12. What does the speaker say about lionfish?
13. What are lionfish doing to the Atlantic Ocean?
14. What can we learn about the team that developed the robot?
15. How did the team train the robot system to hunt down the lionfish?
选项
A、They are terrifying in appearance.
B、They are attractive but poisonous.
C、They are on the edge of extinction.
D、They are native to the North Pacific.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2906693.html
相关试题推荐
[originaltext]Insectsanddiseasesthatattackfoodcropsaremovingasrisent
[originaltext]Insectsanddiseasesthatattackfoodcropsaremovingasrisent
[originaltext]StudentsinAmericanschoolslearnfromanearlyagetogivepres
[originaltext]Thefirstyearofcollegeisoneofthebestandthemostinteres
[originaltext]Thefirstyearofcollegeisoneofthebestandthemostinteres
[originaltext]Thisisadiscussioncoursewhereyouractiveattendanceandpart
[originaltext]Thisisadiscussioncoursewhereyouractiveattendanceandpart
[originaltext]Hungryforthebrighteststudents,manyofthecountry’sstronger
[originaltext]M:Asweprobablyknow,logstructuresaregainingpopularity.We
[originaltext]M:Asweprobablyknow,logstructuresaregainingpopularity.We
随机试题
Mygrandsonistotally______playingnetgames.A、interestedB、uninterestedinC、i
Itwasthefirsttimethathe______hiscompositionin30minutes.A、finishedB、
下列各项,不是心血虚证临床表现的是A.眩晕健忘 B.舌红脉数 C.心悸怔忡
代赭石除具有平肝潜阳作用外,还能具有的功效是A.收敛固涩 B.镇惊安神 C.
下列成分中哪一种最可能不是红细胞的组成部分A.糖类 B.核酸 C.类脂 D
ABS的特点有()。A.通过表外处理,原始权益人能够保持和增强自身的借款能力
党的十八大以来,习近平总书记多次谈及“天下为公”“大道之行也,天下为公”。中国共
(2020年真题)根据对交易账簿的定义,下列不属于交易账簿中的金融工具和商品头寸
关于氟喹诺酮类的药物相互作用,下列说法正确的是A.莫西沙星可在胃肠道中与硫糖铝形
流行性乙型脑炎的病变性质为上述哪种炎症A、纤维素性炎B、浆液性炎C、化脓性炎D、
最新回复
(
0
)