【单选题】如下程序,求序列:1、3、5、7.......的前20项之和,请选择正确的答案填空( )。#includevoid main( ) { int i; int sum, t ; //sum代表和, t代表某项 sum = 0 ; t = 1 ; for (i=1 ; ___________ ; i++) { sum + = t; t += ...
【简答题】Noun suffixes create nouns when they are added to other words. (verbs, adjectives...) Answer the questions below and show the noun suffixes in your answers. 1)What do you call someone who studies econ...