10．From old times，crows（烏鴉）have been famous for their cleverness．They use tools，work out problems，and even enjoy playing．Scientists have studied carefully how crows go about these activities．
To make tools，crows cut off leaves with their"mouths"，shape them，and use them to look for bugs（蟲子）in wood or plants．Just as a carpenter carries his tools with him，a crow will carry its tool around．When the leaf isn't needed for the moment，the bird stores the tool at its feet or somewhere else．
To test wild crows'abilities to work out problems，scientists placed food outdoors in covered bowls．They watched with interest as the birds smartly opened the bowls to get the food．Scientists also found out that crows can make use of the traffic．For example，crows would drop a nut on the road and wait for a car to run over the nut to break it．
Besides，crows seem to enjoy playing．Young crows will carry a stick or nut into the air，drop it，and fly to catch the object as it falls．
So just how smart are crows？Perhaps a crow will never do tricks as a dog will．But scientists agree that there's a lot going on in the brain of a clever crow．
25．We learn from paragraph 2 that a crow may store theA at its feet or somewhere else．
A．leaf
B．mouth
C．wood
D．bowl
26．Scientists placed food outdoors in covered bowls in order to testD．
A．Whether crows make tools
B．Whether crows enjoy playing
C．How much crows like the food
D．How crows work out problems
27．The writer uses a（n）C to show how crows make use of the traffic．
A．survey
B．guess
C．example
D．experiment
28．This passage mainly discusses theDof crows．
A．tricks
B．foods
C．happiness
D．cleverness．
分析 本文通過烏鴉制造工具，解決問題的能力和利用交通等，說明烏鴉是聰明的動物．
解答 25．A 細節理解題．根據句子To make tools，crows cut off leaves with their"mouths"，shape them，and use them to look for bugs（蟲子）in wood or plants…the bird stores the tool at its feet or somewhere else．可見烏鴉用葉子做為尋找蟲子的工具，所以答案選A．
26．D 細節理解題．根據句子To test wild crows'abilities to work out problems，scientists placed food outdoors in covered bowls為了測試野生烏鴉解決問題的能力，科學家們把食物放在戶外蓋著的碗里．所以答案選D．
27．C細節理解題．根據句子 Scientists also found out that crows can make use of the traffic．科學家還發現烏鴉能利用交通．然后舉例說明．
28．D 主旨大意題．根據文章最后一句Perhaps a crow will never do tricks as a dog will．But scientists agree that there's a lot going on in the brain of a clever crow．
也許烏鴉不會像狗那樣做把戲，但科學家們認為聰明的烏鴉腦子里有很多東西．可見本文主要寫的是烏鴉是聰明的．
點評 本文考查細節題為主，細節題可以在文章中直接找到與答案有關的信息？或是其變體．搜查信息在閱讀中非常重要它包括理解作者在敘述某事時使用的具體事實、數據、圖表等細節信息．在一篇短文里大部分篇幅都屬于這類圍繞主體展開的細節．做這類題一般采用尋讀法？即先讀題，然后帶著問題快速閱讀短文，找出與問題有關的詞語或句子，再對相關部分進行分析對比，找出答案．
