Given a grammar A→bA|ca, the grammar sentence is( )。
A: bba
B: cab
C: bca
D: cba
A: bba
B: cab
C: bca
D: cba
举一反三
- 设A,B,C均为n阶矩阵，且AB=BA,AC=CA，则ABC=（）（A）ACB（B）CBA（C）BCA（D）CAB.
- The sequence of grammar symbols derived from the beginning symbol of the grammar after several steps (including 0 step) is called( )。 A: language B: Sentence<br/>pattern C: Sentence D: Handle
- In English grammar, a prepositional phrase modifies an adjective in a sentence。（ ）
- There are four types of grammar,type-0, type-1, type-2, type-3. The type 1 grammar is (). A: Phrasal grammar B: Regular grammar C: Context-related grammar D: Context-free grammar
- Which type of grammar tends to teach you how the grammar is used by the people rather than how it should be used? A: descriptive grammar B: prescriptive grammar C: traditional grammar D: new grammar