对于下面的文法G[S]，（）是其句子(从S出发开始推导)。 G[S]：S→M|(S

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问题单项选择题

对于下面的文法G[S]，（）是其句子(从S出发开始推导)。
G[S]：S→M|(S，M) M→P|MP P→a|b|c|…|x|x|z

A．((a，F))

B．((fac，bb)，g)

C．(abc)

D．(c，(da))

答案

参考答案：B

阅读理解

阅读理解。

I'm Chinese. My name is Zhang Tiantian. I'm thirteen. I'm in Class 7, Grade 7. I have a good friend

at school. He is from the United States. His name is Jeff. He is in Class 7, Grade 7, too, but he's twelve.

Our English teacher is Miss Ouyang. She is a good English teacher.

根据短文内容，判断下列句子的正（T）、误（F）。

( )1. I'm twelve, and my friend is thirteen.

( )2. I'm in Class 1, Grade 7.

( )3. My friend isn't Chinese.

( )4. My friend is in Class 7, Grade 7.

( )5. Our English teacher is a man.

名词解释

甲类液体