问题
单项选择题
地方性斑疹伤寒的传播媒介是
A．人虱
B．鼠蚤
C．恙螨
D．蜱
E．蚊
答案
参考答案：B
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地方性斑疹伤寒的传播媒介是
A．人虱
B．鼠蚤
C．恙螨
D．蜱
E．蚊
参考答案：B
| 从方框中选择单词，带入短文空格内，使短文意思正确、通顺，再将其适当形式填入短文后的横线上。 （每词限用一次）。 | |
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 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 3______. Your username does not have to be your 4______ name. It can be any name you want. When you have your username, other people in the chatroom will can you by that name and 5______ else can use it. Chatting is a good way to 6______ your informal English, Messages in a chatroom are usually short sentences. Sometimes 7______ are not even sentences, 8______ just a few words that are not really grammatically (语法) correct. It's a typical way in which we 9______ in a quick conversation with friends. To save time, people often use abbreviations like TTYL (talk to you later)or 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 new 10______. You can even use a chatroom to help improve your typing skills if you want. |