逐渐视力下降无眼痛可见于（）
A.视网膜中央动脉阻塞
B.急性色素膜炎
C.白内障
D.屈光不正
E.开角型青光眼
参考答案：C, D, E
He had a burning _______ to win back the teacher's confidence in him. [ ]
A. desire
B. feeling
C. emotion
D. impression
一般对比剂产生的过敏反应不包括（）
A.皮肤荨麻疹
B.呼吸困难
C.恶心呕吐
D.腹腔积气
E.血压下降
ck the t
eacher's confidence in him. [ ]