跨时生产可能性边界(intertemporal production possibility frontier)
A) fashion
B) nonsense
C) mistake
D) possibility
A、Possibility
B、Certainty
C、Uncertainty
D、High possibility
A、the isovalue line is above the production possibility frontier.
B、the isovalue line is below the production possibility frontier.
C、the isovalue line is tangent with the indifference curve.
D、the isovalue line is tangent to the production possibility frontier.
Since our knowledge is ______, none of us can exclude the possibility of being wrong.
A.delicate
B.restrained
C.controlled
D.finite
A.lexicology
B.pragmatics
C.pedagogy
D.applied linguistics
A.possibility;necessity
B.impossibility;necessity
C.possibility;unnecessity
D.impossibility;unnecessity
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