在医疗上葡萄糖被大量用于病人输液的原因是[ ]

A．葡萄糖是人体必需食用的营养索

B．葡萄糖是由碳、氢、氧三种元素组成的

C．葡萄糖在人体内能直接进入新陈代

D．每克葡萄糖被氧化释放的能量多

I don't know if she     tomorrow. If she     tomorrow,I'll call you. [ ]

A. comes ; comes

B. comes ; will come

C. will come ; comes

D. will come;is coming