【简答题】完形填空。 Time is very important in our lives. It organizes our everyday moments. However, time never had any importance in my life until I __1__ a watch from my father, which organized my life and made m...
【简答题】Time is very important in our lives. It organizes our everyday moments. However, time never had any importance in my life until I 16 a watch from my father, which organized my life and made me more re...
【判断题】PCR 循环次数主要取决于模板 DNA 的浓度,一般的循环次数选在 30-40 次之间。( )