The sentence structure is （）.

单项选择题A sentence is a （） concept, and the meaning of a sentence is often studied in isolation.

A.pragmatic
B.grammatical
C.mental
D.conceptual

单项选择题What essentially distinguishes semantics and pragmatics is whether in the study of meaning （）is considered.

A.reference
B.speech  act
C.context
D.practical usage

单项选择题“John killed Bill but Bill didn’t die” is a (n) （）.

A.entailment
B.presupposition
C.anomaly
D.contradiction

单项选择题The sentence “The baby smiled.” is a（）.

A.two-place predication
B.three-place predication
C.no-place predication
D.one-place predication

单项选择题The semantic components of the word “gentleman” can be expressed as（）.

A.+animate，+male，+human，+adult
B.+animate，+male，+human，-adult
C.+animate，-male，+human，-adult
D.+animate，-male，+human，+adult