第31题: [单项选择]We all agree that computers are essential ______ the problems of increasing population. A. to solve B. to solving C. solving D. of solving 参考答案:B 答案解析:[分析] 此题考点为形容词与介词搭配。essential必要的,基本的,本质的。essential to译为“对…是必不可少的”,这里“to”是介词,后接动名词,所以B是正确答案。题干中that从句可