坏死性巩膜炎明显的症状是()
A.畏光
B.流泪
C.眼痛
D.充血
E.视力下降
参考答案:C
The Wilsons live in ____A-shaped house near the coast. It is ___17th century cottage[ ]
A. the; /
B. an; the
C. / ; the
D. an; a
杠杆重心到支点的距离长,则灵敏度()。
A.不变
B.低
C.高