【简答题】哺乳动物成熟红细胞是研究膜结构功能的常用材料。下图为细胞膜的结构模式图及某些物质跨膜运输的示意图,结合所学知识,回答下列问题: (1)构成红细胞膜的基本支架是__________。人体缺Fe会造成贫血症状,说明无机盐具有_____________________________的作用。 (2)图中甲侧是细胞膜的______(填“内侧”或“外侧”),判断依据是________________。图中的...
【判断题】颔联两句是千古名句,用来比喻恋人之间情意默契,心心相通。
【简答题】改错:The streets always have many cars run nowadays.A. There are always many cars running in the streets nowadays.
【简答题】Loyalty is one of the problems that confront many companies nowadays.
【判断题】实物明细账可分为无追溯性要求的普通实物明细账和有追溯要求的库存明细账两种。
【单选题】Nowadays many people died ______ lung cancer.
【简答题】《无题》颔联两句是千古名句,用来比喻什么?