Summer is alright, but Mary much ____ (prefer) the autumn.
— Only________ people can afford to travel around the world.
—Not exactly. I heard that a poor student travelled around the world with little money.
棉花纤维长度x
频数
0≤x＜8
1
8≤x＜16
2
16≤x＜24
8
24≤x＜32
6
32≤x＜40
3
