题目

 Younger people might like snow and cold, but for ________， such weather is very tough; snow can turn into ice, ________ is easy to slip on. A. people my age; where  B. my age people; where C. people my age; which  D. my age people; which 答案：C如图所示，为黄光、蓝光分别通过同一干涉装置形成的干涉条纹中心部分，则以下说法正确的是（）A.图甲为黄光产生的衍射条纹B.图甲为蓝光产生的干涉条纹C.从同一介质射向真空，图甲所示的光临界角大D.从同一介质以相同入射角射向真空，图甲所示的光折射角大