A:①、②、③依次代表单糖、二糖、多糖,它们均可继续水解
B:①、②均属还原糖,在加热条件下与斐林试剂发生反应将产生砖红色沉淀
C:④是植物细胞壁的主要成分,是植物特有的多糖
D:④、⑤分别为纤维素、肌糖元,二者均贮存能量,可作为贮能物质
—It __________ be him. He has gone to Lanzhou.
图为植物叶肉细胞结构示意图,与图中序号相对应的结构名称不正确的是( )
根据短文内容,判断正确还是错误。
There is a big fruit shop near Kitty's home. Kitty is at the fruit shop now. There are many kinds of fruits. There are big apples, yellow pears, fresh bananas, juicy oranges, and so on. Kitty wants to buy some apples and bananas. They are expensive. The apples cost ten yuan. The bananas cost twenty yuan.