The author mentions all of the following kinds of insurance except ______.
A. children insurance
B. dental insurance
C. fire insurance
D. life insurance
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The example of the twins mentioned in the third paragraph shows the importance of ______.
A. the birth
B. their intelligence
C. environment on intelligence
D. the university
An insurance system is that you pay a certain sum of money at regular intervals and you get paid ______.
A. also at regular intervals
B. before you pass away
C. in case of right need
D. when the hospital bills are large
When a worker becomes old or disabled in the U. S. A, he may get a small sum of money from
A. his company
B. the government
C. a welfare agency
D. his labor union