题目

It’s said that there _____ a football match on TV this evening. A. will have          B. is going to be    C. has            D. is going to have 答案：B作为系统的边界，细胞膜在细胞的生命活动中有多种功能。右图的模型主要表明了细胞膜的何种功能A．将细胞与外界环境分开B．控制物质进出细胞C．进行细胞间信息交流D．促进物质的运输