全新版大学英语第一册第七单元答案动画版.pptVIP

* BOOK 1 - Unit 7 - - Listening Practice Listen to the recording three times; in the meantime try to fill in the gaps in the passage below with the exact words you have heard. BOOK 1 - Unit 7 - - Listening Practice The crows (鸦), which are found on the South Pacific island of New Caledonia, are able to use tools. To test the birds tool-using talents scientists set seven [wild] (1) birds a tricky task. The crows were [presented] (2) with a piece of meat, which was tucked away (被藏起来), out of reach, in a box; a small stick, which was too short to reach the food; and another longer one, which was long enough to reach the food, but was [locked away] (3), in another box, quite hard to reach. The birds surprised the scientists with their [quick thinking] (4). The creative thing the crows did was to use the short stick to [get the long tool out of the box] (5) so that they could then use the long stick to get the meat. What was most [amazing] (6) was that most of them did this on [wild] [presented] [locked away] [quick thinking] [get the long tool out of the box] [amazing] BOOK 1 - Unit 7 - - Listening Practice the first trial. The first time the scientists gave them the problem [six out of the seven](7) managed to do the right thing. The scientists believe that because the birds were able to solve the problem [on their first attempt](8) they were using analogical reasoning (类比推理). Analogical reasoning is the process of solving a problem using [experience](9) gained from solving related previous problems. This kind of reasoning is [commonly seen in humans](10) and possibly in great apes (猿). [six out of the seven] [on their first attempt] [experience] [commonly seen in humans] BOOK 1 - Unit 7 - - After Listening Complete the following statements according to what you have heard. BOOK 1 - Unit 7 - - After Listening 1. Scientists have discovered that a kind of crow can use [tools] and analogical [reasoning]. 2. We may infer from the passage it i