题目

 Half a month passed and the boy ________ all his money, so he had to turn to his friends for help. A. ran out   B. ran out of   C. ran across  D. ran away with 答案：B下列关于细胞膜信息交流功能的说法不正确是（　　） A、胰岛B细胞分泌的胰岛素几乎可与所有体体胞的细胞膜上相关受体结合B、胰岛A细胞分泌的胰高血糖素主要与肝细胞的细胞膜上相关受体结合C、甲状腺激素由甲状腺分泌后，随血液定向运输到靶细胞D、同种生物的精子和卵细胞通过细胞膜接触识别