颈前结喉处有肿块，或单侧或双侧，可随吞咽上下移动者，称为（）。

A.瘿瘤

B.瘰疬

C.颈瘘

D.项痈

E.发颐

I don't think that sweater is suitable _____ this hot weather.[ ]

A. for

B. to

C. on

D. about