These shoes aren't comfortable. You __________ wear them.
A:should
B:could
C:shouldn't
D:can
小明利用钩码、弹簧及相关器材进行实验,记录的实验数据如表所示.请根据表中数据归纳出弹力F与弹簧伸长量x的关系式为: ____ .
钩码重G/N
0.5
1
1.5
2
2.5
3
3.5
弹簧伸长量x/cm
4
6
8
10
12
14
弹力F/N
读图,完成下面小题.
The place needs a large quantity of water for people to drink.