—Some people believe that robots will take over the world one day.—What if that is the ?A.

问题补充：

—Some people believe that robots will take over the world one day.

—What if that is the ?

A. thing

B. result

C. case

D. end

答案：

A. thing

B. result

(答案→)C. case

D. end

解析：thing事物,事件；result结果；case情况,状况；end结尾,末端。根据下文表达的意思“如果是这种情况怎么办？”可知应选C。