搜题请搜索小程序“爱下问搜题”
问题 填空题
化简：(
2x
x+2
-
x
x-2
)÷
x
x2-4
的结果为______．
答案

原式=

2x(x-2)-x(x+2)
(x+2)(x-2)
×
x2-4
x

=

x2-6x
x2-4
×
x2-4
x

=x-6

故答案为：x-6

写作题

根据汉语提示，写出意思连贯、符合逻辑、不少于80词的短文。

假设你叫陈泉，昨天收到了笔友David的e-mail，得知他不久要作为交流生到宁波来学习中文。他想了解如何学好中文。请你用英文给他回复一封e-mail，介绍学习中文的体会和方法，提出你的建议，以及表达你帮助他学好中文的愿望(60-80字)。开头已给出，不算入字数。 提示词：listen to Chinese songs, read Chinese magazines or newspapers , read Chinese aloud, watch Chinese programs on TV , study with …, ask teachers for help, make flashcards, listen to tapes.

Dear David,

I’m happy to hear from you. And I know that you have learned English for three months. You have trouble learning Chinese. I think ________                                                                                                                              

                                                                                                  
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单项选择题

舌菌相当于西医的哪种疾病：

A．舌癌

B．唇癌

C．鼻咽癌

D．甲状腺癌

E．口腔粘膜白斑
查看答案