making records for any lost objects on the sea

　　C. running a global currents research association

　　D.

　　phoning about any doubtful objects on the sea

　　45. What is the purpose of the author in writing this passage?

　　A. To call people's attention to ocean pollution.

　　B. To warn people of shipping safety in the ocean.

　　C. To explain a unique way of studying ocean currents.

　　D. To give tips on how to search for lost objects on the beach.

　　2017·湖北卷]

　　C

　　Working with a group of baboons(狒狒) in the Namibian desert, Dr Alecia Carter of the Department of Zoology, Cambridge University set baboons learning tasks involving a novel food and a familiar food hidden in a box. Some baboons were given the chance to watch another baboon who already knew how to solve the task, while others had to learn for themselves. To work out how brave or anxious the baboons were, Dr Carter presented them either with a novel food or a threat in the form of a model of a poisonous snake.

　　She found that personality had a major impact on learning. The braver baboons learnt, but the shy ones did not learn the task although they watched the baboon perform the task of finding the novel food just as long as the brave ones did. In effect, despite being made aware of what to do, they were still too shy to do what the experienced baboon did.

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