As a result, some rats are being put to work to detect.
2017年12月四级真题（第一套）阅读 Section A
It is also more accurate— the rats are able to find more TB infections and, therefore, save more lives.
2017年12月四级真题（第一套）阅读 Section A
Rats are often associated with spreading disease rather than preventing it, but this long-tailed animal is highly sensitive.
2017年12月四级真题（第一套）阅读 Section A
Rats are often?associated with spreading disease rather than?preventing it, but this long-tailed animal is highly?sensitive Inside a rat's nose are up to 1, 000 different types of olfactory receptors whereas humans only have 100 to 200 types.
2017年12月四级真题（第一套）阅读 Section A
This gives rats the ability to detect slight smells.
2017年12月四级真题（第一套）阅读 Section A
When the rats detect the smell, they stop and rub their legs to indicate a sample is infected.
2017年12月四级真题（第一套）阅读 Section A
Just like medical researchers use rats to test ideas for human medical treatments, botanists use plants that are relatively easy to grow in a lab or greenhouse setting to test their ideas for related species.
2018年6月六级真题（第一套）阅读 Section B
When lab rats are not allowed to sleep, they die within a month.
2017年高考英语北京卷 阅读理解 七选五 原文
Across 18 trials each, the living rats were 52 percent more likely on average to set the social robot free than the asocial one.
2020年考研真题（英语二）阅读理解 Section Ⅱ
During the experiment, the social robot rat followed the living rats around, played with the same toys, and opened caged doors to let trapped rats escape.
2020年考研真题（英语二）阅读理解 Section Ⅱ
Next, the researchers trapped the robots in cages and gave the rats the opportunity to release them by pressing a lever.
2020年考研真题（英语二）阅读理解 Section Ⅱ
Rats and other animals need to be highly at tuned to social signals from others so that can identify friends to cooperate with and enemies to avoid.
2020年考研真题（英语二）阅读理解 Section Ⅱ
The finding shows how sensitive rats are to social cues, even when they come from basic robots.
2020年考研真题（英语二）阅读理解 Section Ⅱ
The readiness of the rats to befriend the social robot was surprising given its minimal design.
2020年考研真题（英语二）阅读理解 Section Ⅱ
The robots rats were quite minimalist, resembling a chunkier version of a computer mouse with wheels-to move around and colorful markings.
2020年考研真题（英语二）阅读理解 Section Ⅱ
They housed eight adult rats with two types of robotic rat- one social and one asocial - for 5 our days.
2020年考研真题（英语二）阅读理解 Section Ⅱ
This could lead to the rats better remembering having freed it earlier, and wanting the robot to return the favour when they get trapped, says Quinn.
2020年考研真题（英语二）阅读理解 Section Ⅱ
This suggests that the rats perceived the social robot as a genuine social being.
2020年考研真题（英语二）阅读理解 Section Ⅱ
To find out if this extends to non-living beings, Loleh Quinn at the University of California, San diego, and her colleagues tested whether rats can detect social signals form robotic rats.
2020年考研真题（英语二）阅读理解 Section Ⅱ