操纵桨距杆是（）.A.改变飞行速度的基本方法 B.改变飞行状态的唯一方法 C.改变升

根据短文意思，用方框中所给词语的适当形式填空。（有两项是多余的）

Address，want，please，speak，practice，really，nobody，friendly，them，but，usually，help

The verb“ chat” means to talk (to someone)in a friendly, informal(非正式的)way. Today there are many 小题1:  on the Internet where you can chat. You can chat with people all over the world, in many languages and about many subjects or topics. These places are 小题2:  called “chatroom”. Sometimes you need to register( 注册)to enter a chatroom. This means that you need to provide a username(用户名)and possibly your e-mail小题3:    .Your username doesn’t have to be your小题4:  name.It can be any name you want. When you have your username, other people in the chatroom will call you by that name and 小题5:   else can use it.
Chatting is a good way to小题6:   your informal English. Messages in a chatroom are usually short sentences. Sometimes小题7:   are not even sentences, 小题8:   just a few words that are not really grammatically(语法的)correct. It’s a typical way in which we小题9:  in a quick conversation with friends. To save time, people often use abbreviations like IDK(I don’t know).So don’t go to a chatroom to practice “perfect” English. Go to a chatroom to practice informal English and find 小题10:   .
You can even use a chatroom to help improve your typing skills if you want.