Relation between propositions by which A presupposes B, if for A to have a truth value, B must be true is called（）.
A.presupposition
B.entailment
C.contradiction
D.synonymy
正确答案：presupposition
Relation between propositions by which A presupposes B, if for A to have a truth value, B must be true is called（）.
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“It is hot.” is a no-place predication because it contains no argument.
The meaning of a sentence is the sum total of the meanings of all its components.
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