题目

______ about wild plants that they decided to make a trip to Madagascar for further research． A．So curious the couple were                    B．Such curious the couple were  C．So curious were the couple                          D．Such curious were the couple 答案：C甲数的小数点向左移动两位后与乙数相等，乙数是0.9，甲、乙两数的和是90.990.9，甲数是乙数的100100倍．