单项选择题

What's the relationship between "John's uncle bought a new car yesterday" and "John has an uncle"

A. Entailment.
B. Contradiction.
C. Tautology.
D. Presupposition.
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The capital of Australia is
A. Perth.
B. Sydney.
C. Melbourne.
D. Canberra.
单项选择题
______ has won the name of the father of American literature .
A. Washington Irving

B. Captain John Smith
C. Benjamin Franklin

D. Henry Longfellow
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