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
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