问题 单项选择题

经实验证明,混合气体中的含氧量不超过()时,任何体积混合的烃气和氧气都不会发生燃烧。

A、16%

B、8%

C、11.80%

答案

参考答案:C

阅读理解

给下面五个段落排序。

                                                        

                                                         The Chinese character " an"

A. The character for "sun" was a circle with a dot (点) in the center. The character for "man" looked like a body

    with two legs.

B. The Chinese began writing their language over 3, 000 years ago. Their way of writing is very different from

    that of English writing.

C. Now the language of Chinese has greatly been developed. More and more people outside China are beginning

    to learn Chinese. It has become one of the most charming languages in the world.

D. It is written in characters. The early characters were a little like pictures. Each one stood for a different

    character.

E. As time went on, the characters changed. New ones appeared and many became different in meaning from

    their shapes. People could no longer tell what a character meant just by looking at it. 

                                                          

                                                        The Chinese character " fa"

1.               2.                3.                 4.                 5.             

单项选择题 A1/A2型题