Their classroom is than ours that is to say their classroom is as small as ours.A. much

问题补充：

Their classroom is than ours, that is to say, their classroom is as small as ours.

A. much bigger

B. much smaller

C. no bigger

D. less small

答案：

A. much bigger

B. much smaller

(答案→)C. no bigger

D. less small

解析：考查形容词比较级：从that is to say可知两句话是一个意思：他们的教室和我们的一样小。而no +比较级+than就是两者都不…，no bigger than说明两者都不大，一样小，A. much bigger 大得多， B. much smaller小得多，less small不小，都不符合句意。选C。