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Ⅰ.阅读理解
(2022·全国甲卷)Goffin's cockatoos,a kind of small parrot native to Australasia,have been shown to have similar shaperecognition abilities to a human twoyearold.Though not known to use tools in the wild,the birds have proved skilful at tool use while kept in the cage.In a recent experiment,cockatoos were presented with a box with a nut inside it.The clear front of the box had a “keyhole” in a geometric shape,and the birds were given five differently shaped “keys” to choose from.Inserting the correct “key” would let out the nut.
In humans,babies can put a round shape in a round hole from around one year of age,but it will be another year before they are able to do the same with less symmetrical(对称的) shapes.This ability to recognize that a shape will need to be turned in a specific direction before it will fit is called an “allocentric frame of reference”.In the experiment,Goffin's cockatoos were able to select the right tool for the job,in most cases,by visual recognition alone.Where trialanderror was used,the cockatoos did better than monkeys in similar tests.This indicates that Goffin's cockatoos do indeed possess an allocentric frame of reference when moving objects in space,similar to twoyearold babies.
The next step,according to the researchers,is to try and work out whether the cockatoos rely entirely on visual clues(线索),or also use a sense of touch in making their shape selections.
[解题导语] 本文是一篇说明文。文章主要介绍会识别形状的凤头鹦鹉。
1.How did the cockatoos get the nut from the box in the experiment?
A.By following instructions.
B.By using a tool.
C.By turning the box around.
D.By removing the lid.
B 细节理解题。根据第一段“Though not known to use tools in the wild,the birds have proved skilful at tool use while kept in the cage.(虽然人们不知道这些鸟在野外会使用工具,但事实证明,它们在关在笼子里时就能熟练地使用工具)”和“the birds were given five differently shaped ‘keys’ to choose from.Inserting the correct ‘key’ would let out the nut.(研究人员给了这些鸟5把形状各异的‘钥匙’供它们选择。插入正确的‘钥匙’会让坚果出来)”可知,在实验中,凤头鹦鹉是通过使用工具从盒子里取出坚果的。故