题目内容

____ is defined as the study of sentence structure.

A. Mophology
B. Semantics
C. Phonology
D. Syntax

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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

The level of syntactic representation that exists before movement takes place is commonly termed as the ___.

A. phrase structure
B. surface structure
C. syntactic structure
D. deep structure

以苯甲醛和乙酸酐为反应物制备肉桂酸的反应，其反应机理属于：

A. Perkin反应
B. 羟醛缩合
Claisen缩合
D. 安息香缩合

以苯甲醛和乙酸酐为反应物制备肉桂酸的反应中，反应装置中使用的冷凝管为：

A. 水冷凝管
B. 空气冷凝管