下列各项均为气瘿特点除了：（）

A.好发于青年女性

B.颈部弥漫肿大，边缘不清

C.皮色如常

D.触痛明显

E.随吞咽上下移动

More than _____children took part in activities last month.

A．two thirds

B．thirds second

C．second three

D．two third