The patient's life was expected to last several years longer by implanting the artificial
A. Right
B. Wrong
C. Not mentioned
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According to the passage, social distance refers to___________
A. physical distance
B. psychological distance
C. physiological distance
D. philosophical distance
According to the last paragraph, bumping with a motor vehicle took up___________deaths re-ported since 1992.
A. over 80%
B. below 80%
C. about 31%
D. about 36%
If an animal's critical distance is penetrated, it will___________
A. begin to attack
B. try to hide
C. begin to jump
D. run away
Hamer was a___________
A. psychiatrist
B. physiologist
C. chemist
D. biologist
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