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【多选题】
如果在文法G中存在一个句子，当其满足下列条件（）之一时，则称该文法是二义文法。A.
其最左推导和最右推导相同
B.
该句子有两个不同的最左推导
C.
该句子有两个不同的最右推导
D.
该句子有两棵不同的语法树
E.
该句子对应的语法树唯一
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举一反三
【单选题】Why did the farm leaders protest against the session?
A.
Because they did not like the session to be held in the National Archives building.
B.
Because they did not think sports had anything to do with the talk.
C.
Because they thought the decision of changing venue was against the previous agreement.
D.
Because they thought the talk was unfair to poor farmers.
【单选题】Why did July like sitting on the tree?
A.
Because she want to broadcast some information.
B.
Because she could enjoy beautiful things on the tree.
C.
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D.
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