本题目来源于试卷: Physics Unit25: Optical Instruments，类别为 国际高中通用物理
[单选题]
If the human eyeballn ,2;r;cvmef *bj4vbiqv47oi9yfn;gx2o6 jxm + fo)t is too long from front to back, this gives rise to a vision defect that c mnvi x2x g)4yf96t ;+qfjo7ooan be corrected by using
A. convex meniscus eyeglasses.
B. concave meniscus eyeglasses.
C. cylindrical eyeglasses.
D. contact lenses, but no ordinary lenses.
E. shaded glasses (i.e., something that will cause the iris to dilate more).
参考答案: B
本题详细解析:
暂无
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