—Here you are.
A:an
B:a
C:/
Class is over. The students stop and start .
支撑物高度h(cm)
10
20
30
40
50
60
70
80
小车下滑时间t(s)
4.23
3.00
2.45
2.13
1.89
1.71
1.59
1.50
下列说法错误的是( )
Tom is one of _________ students in my class .Yes . He usually prefers _________ at home to playing outside .