These problems are different from each other so they should be dealt with .A. totallyB. s

问题补充：

These problems are different from each other, so they should be dealt with .

A. totally

B. simply

C. separately

D. extremely

答案：

A. totally

B. simply

(答案→)C. separately

D. extremely

解析： 考查词义辨析，totally完全地，simply简单地，separately单独地，各自地，extremely极其地，句意：这些问题彼此互不相同，因此我们应该单独地处理。故选C。