题目

. 第二节 （共5小题；每小题2分，满分10分）     根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。  Without plants, people could not live. We eat plants. ___71___ And we need plants for another reason—we need them because they are beautiful.    ___72___ Imagine no flowers with their sweet smells, their beautiful colours and their lovely shapes. Imagine, when the wind blows, we are not able to hear the leaves of the trees or watch the branches swing from side to side.    ___73___ That is why we ha计算：6•(1327-2112)．