乙酰苯胺的制备除了可以用醋酸作酰化试剂外，还可以采用其它的什么酰化试剂？
A. 乙酰氯
B. 乙酸乙酯
C. 乙酸酐
D. 乙腈
查看答案
Phrase structure rules allow us to better understand _____.
A. how words and phrases form sentences.
B. what constituties the grammaticality of strings of words.
C. how people produce and recognize possible sentences.
D. all of the above.
Syntactic movement is dictated by rules traditionally called ____.
A. transformational rules
B. generative rules
C. prhase structure rules
D. x-bar theory
____ is defined as the study of sentence structure.
A. Mophology
B. Semantics
C. Phonology
D. Syntax
The sentence that has a NP and VP can be shown in a _____ formula "S→NP VP".
A. hierarchical
B. linear
C. tree diagram
D. vertical
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