D Songs sung by male finches to other finches.
39 The expression directed communication in the last paragraph means communication in which
A the message sender has a specific audience.
B the communicator sends messages to himself.
C two communicators send messages to each other.
D mothers talk to their babies in their mother tongue.
40 Which of the following can best reflect the theme of the passage?
A Chirping away.
B Zebra finches and their life.
C Birdsongs as communication.
D Frequencies of birdsongs.
第三篇
The Robot Man
According to Hans Moravec, universal robots will take over all the physical
41 What will be the distinctive feature of the second generation robots?
A They will be able to recognize speeches and texts.
B They will be able to learn by themselves.
C They will be able to predict problems.
D They will be able to match human reasoning and behavior.
42 Which of the following statements is true of the future robots?
A They will relieve us of many chores.
B They will take over the information industry.
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