The number of tigers in Asia getting smaller and smaller and a large number of people tryi

问题补充：

The number of tigers in Asia getting smaller and smaller and a large number of people trying to protect them．

A. are；are

B. is；is

C. is；are

D. are；is

答案：

A. are；are

B. is；is

(答案→)C. is；are

D. are；is

解析：句意：亚洲虎的数量越来越小，许多人试图保护他们。The number of…的数量，作主语时谓语动词用三单形式；a number of许多，修饰复数名词，作定语。所以选C。