Read the passage carefully, then choose the correct answer
The first system of communication of animals is natural. Many kinds of animals have ways of communicating with each other. And one of the most interesting examples is that of bees. These insects communicate with each other by dancing. The most important kind of dance that they do is concerned with food. They get their food from flowers, of course, from plants and trees. When a bee has found some food, it returns to the other bees and can give them three basic kinds of information about the food: which direction it is in, whether it is nearby or a long way away, and whether it is good to eat or poisonous.
The other kind of system of communication of animals is artificial. It means animals learn it; in this case, they learn from man. Several famous experiments have been carried out with chimpanzees, trying to teach them human language.
One of these experiments was done with a chimpanzee called Sarah. Sarah was taught to understand a system of symbols which represented words. The symbols were cut out of coloured plastic, and each different shape stood for a different word. For example, a red square stood for “banana”, Sarah’s favorite fruit. Soon Sarah could not only understand words, but even sentences. She could obey orders: if her human friends put down the symbols for “apple in cup”, she would put the apple in the cup. Later, she began giving the scientists orders – she was writing her own sentences, and she got upset if the scientists did not obey her. We do not yet know whether chimpanzees will ever learn to use language to communicate as freely as human beings do, but the results so far suggest that this is at least a possibility.
41) According to the passage, bees ____________________________________.
A. learn to communicate B. are born to be able to communicate
C. are the most interesting animals D. communicate with each other by flying
42) From the passage, we can conclude that bees are _____________________.
A. so selfish as to let other bees share the bad food
B. so selfish as to look for food for themselves
C. so hardworking that they dance all the time
D. so smart that they know where the food is
43) The experiment done with Sarah is an example of ____________________.
A. animals with natural system of communication
B. animals able to communicate with humans
C. animals possible to use language as humans
D. animals with a system of communication worked out by humans
44) The results of the experiment with chimpanzees show the possibility to teach animals _____.
A. how to use language freely
B. how to give orders
C. how to obey orders
D. how to understand words and sentences
45) The phrase “concerned with” is closest in meaning to ________________.
A. interested in B. responsible for C. related to D. joined to
