题目

Singapore is a playground for the wealthy, so it’s surprising that in the past five years, most of the purchasing desire ________ from those at the bottom of the economic pyramid.A.came B.comes C.has come D.have come 答案：【答案】C【解析】考查时态和主谓一致。句意：新加坡是富人的游乐场，因此，令人惊讶的是，过去五年里，大多数购买欲望都来自经济金字塔的底层。根据句子时间状语“in the past five years”可知，应是现在完成时，结合主语“most of the purchasing desire(大多数的购买欲望)”中“the purchasing desire”为不可日历表中某数上方的数与它左边的数的和为28,则这个数是_______.