连一连，读一读。

小河____            绿茵茵

天空____            黑乎乎

树木____            碧澄澄

太阳____            红通通（tōnɡ）

泥土____            蓝湛湛

公路上匀速行驶的货车受一扰动，车上货物随车厢底板上下振动但不脱离底板．一段时间内货物在竖直方向的振动可视为简谐运动，周期为T．取竖直向上为正方向，以某时刻作为计时起点，即t=0，其振动图象如图所示，则（   ）

25个24相加的和是49．（判断对错）

阅读理解A
    I'm Linda．I can't find my keys．I lost them this morning．There is a Lost and Found box in our classroom．My keys may (可能)be in the box．
    Oh, there are many things in the box．This is a pencil box．What color is it? It's yellow．That is a white eraser．And what's that? It is a watch．A picture of a CD is on it．It's Sara's．Wow! I find my keys．One is to my classroom，and the other (另一个)is to my house．That green cup is Jack's．This baseball is his，too．I will(将)ask him to take his things．Three rulers, two pencils and two nice pens are also in the box．Whose are they? I don't know．
根据材料内容判断正误。

（2015•北海）下列对光现象描述的说法不正确的是（　　）