Do you know how to make friends with a group of people? Let me tell you something about ____ friends with the group. Maybe it's helpful to you.

    First you need to know what kind of group they belong ____ If people in the group are shy, never ____ them “Why don't you talk?”, ”Why are you quiet?” or “Why do you look shy?” They don't like such ____

    Next, remember that each group is different. They may use.____ words, like different things or have different ways of “hanging out”.

    Then ,the important thing is that you must try to be outgoing.____you are outgoing, you will become very popular. Remember,____wants to make friends with a quite shy person.

    Finally, find a right topic to talk ____others or the one you want to make friends with. For ____you can talk with them about the weather, their hobbies or their school lives.

    If you do all these above, you will make more friends and get____well with them.

—He's a farmer.

如图所示，一束白光从顶角为θ的棱镜的一个侧面AB以较大的入射角i入射，经过三棱镜后，在屏P上可得到彩色光带，当入射角逐渐减小到零的过程中，若屏上的彩色光带先后全部消失，则(　　)

一支钢笔8.3元，一支签字笔2.68元，钢笔的价格比签字笔贵____元____角

____分。