【判断题】高度专一性是指酶对底物有严格的选择性。( )
【简答题】Since it is to ask for sick leave, he often uses it as an excuse for staying away from school.
【单选题】-----Lin Tao’s spoken English is very good. ----- _______. He often talks with foreigners.
【简答题】酶的底物专一性(substratespecificity)(名词解释)
【单选题】He often travels, but never takes the plane. He thinks it is ______ .