下表为1621年荷兰科学家涅尔通过实验得出的一组光从空气进入到玻璃中的数据．

根据涅尔的数据，我们可以得出结论：反射角 ____入射角；光从空气斜射入玻璃时折射角 ____入射角，且当入射角逐渐增大时，折射角逐渐 ____；入射角与折射角的比值 ____一个定值，入射角与折射角的正弦之比值 ____一个定值．（后两空填“是”或“不是”）

说明：sinθ为角的正弦，在直角三角形中等于对边比斜边．

    It is Saturday morning. The sky is blue. My father and I are going to the park. There are a lot of people in the park. Some children are running on the grass. A dog is running after them. Some men are sitting on the grass. They are talking. Two girls are flying a nice kite. Three women are standing under a tree, and they are watching the children playing. There is a boat in the lake and two women are boating. Everyone in the park is very happy.

下图为甲、乙、丙三种物质的溶解度曲线。下列说法正确的是(   )