题目

Last spring, I was fortunate to be chosen to participate in an exchange study program. In my application letter, I was careful to____how much I wanted to see France; evidently, my excitement really came through in my words. Once I____that I was going, all I could think about was the fun of foreign travel and making all sorts of new and____friends. While traveling was inspiring and meeting people was____, nothing about my term in France was what I____.The moment I arrived in Paris, I was____by a nice French couple who would become my host parents. My entire experience was joyous and exciting___如图所示，P、Q是两种透明材料制成的两块相同的直角梯形棱镜，叠合在一起组成一个长方体，一单色光处P的上表面射入，折射光线正好垂直通过两棱镜的界面，已知材料的折射率，射到P上表面的光线与P的上表面的夹角为θ，下列判断正确的是     A．光线有可能不从Q的下表面射出 B．光线若从Q的下表面射出时，出射光线与下表面的夹角一定等于θ C．光线若从Q的下表面射出时，出射光线与下表面的夹角一定大于θ D．光线若从Q的下表面射出时，出射光线与下表面的夹角一定小于θ