碳和一氧化碳都具有的化学性质是 ①在常温下都比较稳定，②在空气中都能燃烧，③在一

用所给单词的适当形式完成短文。

address      place     speak     really    but      healthy practice     friendly   them      nobody   usually   talk

     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. These places are 小题2: called “chat room”. Sometimes you need to register (注册) to enter a chat room. This means that you need to offer a usename (用户名) and possibly your e-mail 小题3: .Your usename 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 chat room 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 chat room 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) 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 (缩写形式) like TTYL (talk to you later) or IDK (I don’t know). So don’t go to a chat room to practice “perfect English”. Go to a chat room to practice informal English and find new 小题10: You can even use a chat room to help improve your typing skills if you want.