—What's in the basket?
— ______ some bread. And ____ two tins of chicken, too.
A:They are; They are
B:There is; There are
C:It's; It's
电影院第一排有m个座位,后面一排都比前一排多1个座位.第n排有( )个座位.
实验一
酶浓度
0%
1%
2%
4%
5%
(乳糖浓度为10%)
相对反应速率
0
25
50
100
200
实验二
乳糖浓度
10%
20%
30%
(酶浓度为2%)
65
以下分析正确的是( )
掷一枚六个面分别标有1,2,3,4,5,6的正方体骰子,则向上一面的数不大于4的概率是( )