A young man sees a sunset and, unable to understand or express the emotion that it( )in him, concludes that it must be the gateway to a world that lies beyond.
考查动词辨析。A选项reflect“反射(光、热、声或影像)”;B选项retain“保持”;C选项radiate“辐射,发射”;D选项rouse“唤醒,激起(某种情感)”。句中的it 指代前面的sunset,根据语境,可知选D,表示“the emotion that it rouses(日落激起的情感)”。句意:一个年轻人看到日落,无法理解或表达它在他心中激起的情感,他得出结论,日落想必是通往遥远世界的大门。