Questions 41-50: Read the passage and answer the questions that follow by circling the corresponding
letter A, B, C or D of the correct answers. Mark your choice on the answer sheet.
One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The
astronomer was visiting an institute which was looking into the way dolphins communicate with each other.
Sagan was standing on the edge of one of the tanks where several of these friendly, highly intelligent creatures
were kept. Elvar had just swum up alongside him and had turned on his back.
The dolphin wanted Sagan to scratch his stomach again, as the astronomer had done twice before. Elvar looked up
at Sagan, waiting. Then, after a minute or so, the dolphin leapt up through the water and made a sound just like
the word "more". The astonished astronomer went to the director of the institute and told him about the incident.
"Oh, yes. That's one of the words he knows," the director said, showing no surprise at all.
Dolphins have bigger brains in proportion to their body size than humans have, and it has been known for a long
time that they can make a number of sounds. What is more, these sounds seem to have different functions, such as
warning each other of danger. Sound travels much faster and much further in water than it does in air. That is why
the parts of the brain that deal with sound are much better developed in dolphins than in humans. For example, the
two questions "Who loves Mary?" and "Who does Mary love?" mean very different things. Scientists don't agree
on this.
41. Carl Sagan is_________.
A. the director of an institute.
B. an astronomer.
C. a scientist.
D. a worker of an institute.
42. He visited an institute which was________.
A. studying the way dolphins communicate with each other.
B. studying a language.
C. studying astronomy.
D. studying means of communication.
43. What game did he played with the dolphin Elvar?
to f J rA. He swam with Elvar.
B. He tried to communicate with Elvar.
C. He scratched the dolphin's stomach.
D. He scratched the dolphin's head.
44. The dolphin leapt into the air because__________.
A. Sagan was too near the water.
B. it was part of the game they were playing.
C. he wanted Sagan to scratch him again.
D. Sagan wanted to communicate with him.
45. What did the dolphin do when it leapt up through the water?
A. It stood on the edge of one of the tanks.
B. It made a sound just like the word "more".
C. It dived into water immediately.
D. It scratched Sagan.
46. The director of the institute was not surprised because________.
A. he scratched the dolphin twice before.
B. he could understand dolphins' language.
C. he taught that word to the dolphin.
D. he had known that the dolphin knew that word.
47. Dolphins' brains are
A. bigger than humans' brains.
B. smaller than humans' brains.
C. bigger in proportion to their body size compared to humans' brains.
D. smaller in proportion to their body size compared to humans' brains.
48. Dolphins' brains are particularly well developed to_______.
A. help them to travel fast in water.
B. arrange sounds in different structures.
C. respond to different kinds of sound.
D. communicate with humans through sound.
49. Dolphins' sounds have_______.
A. different functions.
B. different structures.
C. different warnings.
D. different systems.
50. Sounds travel_______in water than it does in the air.
A. much slower
B. much faster
C. much further
D. much faster and much farther
Bạn đang xem questions 41- - BAI KIEM TRA ANH
