原文：
It is well konwn that man is much cleverer than any animal.But which is the c_1_ cmong the animals?Some scientists t_2_ it should be Alex,an African grey parrot.He is unlike any other animal.he can really t_3_ with people.When he says "come here",he really w_4_ someone to come up to him."Alex is as clever as a c_5_ of two or three years old,"says Dr Pepperberg."He does not just repeat the s_6_ he has been taught.He u_7_ the words!" Alex can tell about fifty d_8_ things,name seven colours and count from one to six.Is the parrot actually thinking in the w_9_ how man does?Nobody can say.But the q_10_ is very interesting.
答案：
1.among 2.think 3.talk 4.wants 5.child 6.sounds 7.understands 8.different 9.way 10.question