— According to my grandma, it is a good idea to eat chicken soup when you have a cold.

— _____, scientists agree with her.[ ]

A. Sooner or later

B. Once in a while

C. To be exact

D. Believe it or not

维生素E的含量测定方法有（）

A、酸性染料比色法

B、气相色谱法

C、高效液相法

D、铈量法

E、三氯化锑比色法