题目

---- How is the man injured in the accident?    ---- The doctor said if ________ in a proper way, he was likely to be saved.    A. treated                  B. treating         C. is treated       D. to be treated 答案：A已知{an}是递增的等差数列，它的前三项的和为-3，前三项的积为8．（1）求数列{an}的通项公式；（2）求数列{|an|}的前n项和Sn．