问题 单项选择题

隧道二次衬砌的施工,应在()进行。

A.围岩和初期劫掠变形基本稳定后

B.喷射砼达到龄期后

C.围岩和锚杆支护施工后马上

D.喷射砼达到设计强度后

答案

参考答案:A

改错题

短文改错。

     假如英语课上老师要求同学们交换修改作文,请你修改你同桌的以下作文。文章共有10处语言

错误,要求你在错误的地方增加、删除或修改某个单词。

增加:在缺词处加一个漏字符号(A),并在其下面写上该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下画一横线,并在该词下面写上修改后的词。

注意:1. 每处错误及修改词均仅限一词; 

          2. 只允许修改10处,多者(从11处起)不记分。

Dear Editor,

     I'm writing to tell you about a food poisoning accident. Several days ago, my neighbor ate a bag of food

buying from the market. After the meal, they had stomachaches and their faces turn pale. Fortunately, one

of their friends found the accident and immediately called on an ambulance, which carried them quickly to

a hospital. After several hours' treatment they finally escaped from death. 

     As some illegal businessmen only interested in making profits to become rich quickly, we seldom care

about the necessary safety measures or care which happens to consumers. They must be charged with law.

Meanwhile, I do hope whole society can realize the important of food safety and begin taking action together

to make sure food is safe. 

                                                                                                                                         Yours, 

                                                                                                                                        Wang Ming

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不定项选择