Did you know that humans aren't the only species （物种） that use language？Bees communicate by dancing.Whales talk to each other by singing.And some apes talk to humans by using American Sign Language.
   A female gorilla（大猩猩），Koko，was born at the San Francisco Zoo on July 4th，1971.Koko learned sign language from her trainer，Dr.Penny Patterson.Patterson began teaching sign language to Koko in 1972，when Koko was one year old.Koko must have been a good student，because two years later she moved onto the Stanford University campus with Dr.Patterson.Koko continued to learn on the campus until 1976.That's when she began living full﹣time with Patterson's group，the Gorilla Foundation.Patterson and Koko's relationship has been very close ever since.
   Dr.Patterson says that Koko has mastered sign language and known over 1，000 words，and that Koko makes up new words.For example，Koko didn't know the sign for ring，so she signed the words finger and bracelet（手镯）.Dr.Patterson thinks that this shows meaningful and constructive use of language.
   Not everyone agrees with Dr.Patterson.Some argue that apes（类人猿） like Koko do not understand the meaning of what they are doing.Some people who don't believe that say that these apes are just performing complex tricks （戏法）.For example，if Koko points to an apple and signs red or apple，Dr.Patterson will give her an apple.They argue that Koko does not really know what the sign apple means.She only knows that that if she makes the right movement，one which Dr.Patterson has shown her，then she gets an apple.The argument is not solved，but one thing is for certain：Koko is an extraordinary ape.
   It seems like Patterson and Koko have a good relationship，but not everyone agrees with it.Some people believe that Patterson is humanizing the ape.They think that apes should be left in the most natural state possible.Even Dr.Patterson struggles with these feelings.When she was asked if her findings could be duplicated by another group of scientists，she said， "We don't think that it would be ethical（道德的）to do again. " She went on to argue that animals should not be kept in such unnatural environment.
   As for the future，Dr.Patterson and the Gorilla Foundation would love to get Koko to an ape preserve（保护区） in Maui，but they are having trouble getting the land.So unless you have a few million dollars to give，Koko's going to be spending her time in Woodland，California with Dr.Patterson.Koko probably doesn't mind that.If she moved to Hawaii，she'd have to give up her Facebook page and Twitter feed，and she's got like 50 thousand "likes".Some may deny （否认） that she knows sign language，but nobody says that she doesn't know social networking.
 
（1）What is the writer's main purpose in writing the second paragraph？

D

D

A.To describe the environment in which Koko lives.
B.To tell readers how Dr.Patterson developed Koko's living skills.
C.To advise Patterson to free Koko after she learnt on the campus.
D.To make an introduction about Koko and Dr.Patterson's background.
（2）What do we know from the passage？

C

C

A.Koko has mastered sign language without a doubt.
B.Everybody likes how Dr.Patterson has raised Koko.
C.Some people think that Koko only signs to get food.
D.The Gorilla Foundation has got a land for Koko to stay naturally.
（3）Which of the following may best describe the structure of this passage？

C

C

A.
B.
C.
D.
（4）What does the underlined word "duplicated" in Paragraph 5 probably mean？

C

C

A.To disagree with someone.
B.To fool them.
C.To copy something.
D.To be disproved through debate.
（5）Which may be the main idea of this passage？

B

B

A.Bees，whales，and apes like Koko all use language to communicate.
B.Koko uses sign language but some think it's just a trick.
C.It is natural for gorillas to learn sign language like humans.
D.If you want a lot of "likes" on Facebook，get a talking gorilla.