Along with these physical changes, there come many psychological changes. Boys and girls tend to be different in this 【小题1】. Many boys become risk-takers—they want to find their own limits and the limits of the world around them, but may not have the 【小题2】 to make good 【小题3】 in their behavior. At the same time, girls often want someone—anyone—to talk to, as they try to【小题4】 with their strong feelings.

The Amber Room, made of several tons of amber and  decorated【小题1】gold and jewels, has a(n) 【小题2】 history. At first, it【小题3】for the palace of Frederick I. Then in 1716 he gave it to Peter the Great, and later, the Czar made it serve as a small【小题4】hall.

The newly invented digital camera is 【小题1】: you can take pictures without film. You can 【小题2】 and exhibit your picture globally in a few seconds through the Internet. The images 【小题3】 in a hard drive will never wear 【小题4】 like traditional photos. Digital cameras also satisfy 【小题5】 photographers by allowing them to view their masterpiece in real time.