根据短文内容和首字母提示，在空白处填入适当的单词。

     Tom's bedroom is very small. There is a nice guitar in his room n   1    the window. There is a desk

near the window, too. It's big and nice. A clock is o   2    the desk. N   3    to the clock there is a lamp.

There is a chair b   4    the desk. U   5    the chair there is a soccer ball. He loves playing soccer very much.

1._____ 2. _____ 3. _____ 4. _____ 5. _____

以下关于光的说法，正确的一项是( )。

A．可见光、紫外线、X光等本质上都一样，都是电磁波

B．光的波长越短，其传播速度也越快

C．物体越热，原子释放的光的波长就越长，当非常热时，会显示整个光谱，呈现白色

D．放大镜能够放大物体是因为光在通过透镜时发生了散射