单选题
Some 121 countries may be designated "developing", and of this 121, seventeen countries ______ more than four-fifths of energy consumption.
【正确答案】
B
【答案解析】amount to总计,等于;account for除了表示“说明”以外,还可以表示“占……比例”;add up合计;take away取走,拿走。只有account for符合句子的含义。