用角膜映光法检查眼位,当角膜映光点位于瞳孔缘时,其偏斜度大约是()
A.25°
B.15°
C.20°
D.5°
E.以上均不是
参考答案:B
When she realized I _________ her, she quickly made a pose, smiling.[ ]
A. photographed
B. had photographed
C. was photographing
D. will photograph
苯、甲苯、二甲苯中,毒性最大的是()。
A、甲苯
B、苯
C、邻二甲苯
D、间二甲苯