该肌收缩时可扩大泪囊（）
A.眼外直肌
B.眼轮匝肌
C.眼上斜肌
D.眼下斜肌
E.瞳孔括约肌
参考答案：B
It is so wet there _____ the trees are extremely tall, some measuring over 90 meters.
A．what
B．which
C．that
D．why
涤纶纤度规格150D/96F，表示长丝粗细是150旦，由96根单丝组成。
