问题
多项选择题
鼻咽癌早期诊断率不高的原因是（）。
A.鼻咽部位置隐蔽，不易发现病变
B.鼻咽癌恶性度高，发展快
C.早期无明显自觉症状
D.黏膜下肿瘤，表面无明显隆起
E.早期出现淋巴结转移，易被误诊为淋巴结核等疾病
答案
参考答案：A, B, C, D, E
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鼻咽癌早期诊断率不高的原因是（）。
A.鼻咽部位置隐蔽，不易发现病变
B.鼻咽癌恶性度高，发展快
C.早期无明显自觉症状
D.黏膜下肿瘤，表面无明显隆起
E.早期出现淋巴结转移，易被误诊为淋巴结核等疾病
参考答案：A, B, C, D, E
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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. |