From the second paragraph，we know that
A. Cousteau did not like any scientific definitions．
B. Cousteau wrote many adventure--filled stories．
Cousteau’ s main job was protecting environment．
D. Cousteau’s contributions were not limited to science and engineering．
查看答案
The navigation computers have one thing in common：they all
A. contain series of maps on videodiscs or Videotapes
B. contain 13，300 maps covering the continental US
C. can be obtained free of charge
D. cost a lot of money
The last paragraph implies that diagnostic test.
A. will not be as promising as others
B. is a very important development
C. may not be proven valid smoothly
D. will surely be disappointing in the end
A．1ikelyB．possibleC．easyD．prone
A. 1ikely
B. possible
C. easy
D. prone
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