题目

怀孕就是指一粒“种子”植入到子宫内膜上，这一粒“种子”就是 A、受精卵     B、胚泡     C、胚胎      D、胎儿 答案：B29、I like this jacket better than that one, but it costs almost three times______. A. as much    B. as many    C. so much    D. so many