A:在“还原糖的鉴定”和“观察DNA和RNA在细胞中的分布”实验中都需要进行水浴加热或保温
B:在“还原糖、蛋白质和脂肪的鉴定”实验中,只有蛋白质的鉴定要用到NaOH
C:在“蛋白质鉴定”的实验中,先向蛋白质溶液中加入0.1g/ml NaOH溶液,再加入0.01g/mL CuSO4溶液,然后观察实验现象
D:“观察DNA和RNA在细胞中的分布”实验中0.9%NaCl溶液的作用是保持细胞正常形态
下面是有关厨房中的常见操作或者常见现象,其中不属于氧化还原反应的是()
My friend Tony is an American 1 . He is ten years old. He lives 2 his family in China now. There are 3 people in his family; his mother Mrs. Green, his father Mr. Green and his little sister Amy. He has a white cat. 4 name is Betty. Look!Amy is playing 5 Betty. His father, Mr. Green, is watching TV. His mother is doing housework. What about Tony? He is doing 6 Chinese homework. He can't 7 Chinese well, but he likes Chinese very much. Tony's 8 works in a TV station. His father works in a school as an 9 teacher. Tony and his sister 10 to the same school.
标点符号不完全正确的一项是( )