TPP（）在丙酮酸脱羧过程中起转移（）的作用，有机硫类克菌丹主要是破坏TPP＋，从而抑制（）的形成。
参考答案：硫胺素焦磷酸；乙酰基；乙酰辅酶A
用所给动词的适当形式填空。
1. He is afraid of____ (go) out by himself.
2. We are____ (take) notes while the teacher is having a lesson.
3. He (enjoy) helping others in trouble.
4. Doing much listening practice can make you be a good language____ (learn).
5. It's not easy to understand his____ (speak) English.
内部转让价格包括（）
A.以成本为基础的转让价格
B.以市场为基础的转让价格
C.根据协商价格制定转让价格
D.双重内部价格
E.以利润为基础的转让价格
