We often _____ that when other people do the same things as we do, they do them for the same reasons; but this assumption is not always reasonable.
A. assume
B. asistant
C. aspect
D. activity
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There is widespread concern that the rising unemployment may _____ a threat to social stability.
A. poem
B. pole
C. pose
D. pour
After a(n) _____ physical exam, my doctor said I was in good condition except that my blood pressure was a little high.
A. intense
B. relaxed
C. comprehensive
D. harsh
It is well known what China is a country with rich natural _____and a very big population.
A. data
B. concern
C. mass
D. resources
Some people believe that the earth can _____ enough food to support at least twice its present population.
A. yield to
B. yield
C. yard
D. yard to