One theory for dogs’ ability to learn a language is that they have ben close companions to humans for many centuries and so their ability to understand us is constantly evolving (进化). While animals can’t do what humans do yet, some scientists believe that examples like Alex and Rico prove that evolution develops intelligence, as well as physical appearance.
56. Irene wanted to find out __________.
A. what a parrot thinks
B. why a parrot can speak
C. how parrots make sounds
D. if parrots speak English
57. Alex learnt new words by __________.
A. singing them
B. reading them
C. writing them
D. rehearing them
58. The two dogs mentioned in the article could _______.
A. understand some words
B. recognize strange voices
C. copy human gestures
D. tell different colors
59. The article concludes that ___________.
A. our pets understand what we say
B. dogs may speak to humans one day
C. humans are related to chimpanzees
D. mental ability can evolve in animals
B
Sports are the base of my life, next to my mother who raised me when my dad left us. I have been into sports since I was six years old. I have known many coaches and heard hundreds of their tips, but they usually focused on drills to develop my skills and reach the next level of play.
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