B. used 

　　C. improved

　　D. uncompleted

　　52. A. doubt

　　B. tears 

　　C. anger  

　　D. smiles 

　　53. A. though

　　B. since

　　C. if 

　　D. as

　　54. A. disappeared 

　　B. grew

　　C. exploded

　　D. decreased

　　55. A. artist 

　　B. teacher

　　C. organizer 

　　D. advertiser

　　第三部分 阅读理解(共两节，40分)

　　第一节 （共15小题；每小题2分，共30分）

　　阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项，并在答题卡上将该项涂黑。

　　A

　　Copycat Elephants

　　You may have seen a talking parrot on a TV show, in a movie, or even in someone’s home. The parrot has learned to copy sounds that people make. Birds are not the only animals that can copy the noises they hear. Dolphins, bats, and some apes also copy sounds. Now we can add elephants to this list of copycats.

　　Dr. Joyce Poole is a zoologist. She studies the sounds of elephants. While she was in Kenya, she would hear strange noises made by Mlaika after sunset. Mlaika was a 10-year-old African elephant.

　　Mlaika lived near a highway. Dr. Poole says, “I could not tell the difference between Mlaika’s call and the distant truck noise.” She and other scientists studied Mlaika’s sounds. It turned out that Mlaika was copying the sounds of the trucks driving by. Why would Mlaika copy trucks that she heard going by on the highway? Animals that are able to copy sounds may enjoy practicing new sounds. When they are kept outside of their natural environment, they may copy unusual sounds. That may be why an elephant would copy the sound of a truck.

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