2017 National Question 8 Single-choice Differentiating 2017_新课标II Paper 8.(5分)执行如图的程序框图,如果输入的$a=$﹣1,则输出的$S=$( ) A. 2B. 3C. 4D. 5 Answer keyB ☆ SaveCan't do it, show the explanation查看原卷 →