早晨，森林里散发出阵阵清香。树缝中间透进来的阳兴有红的，有紫的，组成了各种颜色的光带。一只只小松鼠从这棵树跳到那棵树上。树上的露水沙沙地滴落下来。树上的几只黃莺叫得那么脆，那么响。

⑴We can't swim in the lake?____                                        A.

⑵There is a toilet here.____                                                B.

⑶We should keep quiet in the library.____                         C.

⑷We can't walk on the grass.____                                       D.  

⑸We can eat here.____                                                        E.

右图是甲和乙两种物质的溶解度曲线。下列说法正确的是（   ）