短文改错。

     文中共有10处错误，涉及一个单词的增加、删除或修改。

     增加：在此处加一个漏字符号 ( ∧ )，并在其下面写出修改的词。

     删除：把多余的词用斜线 ( ＼ ) 划掉。

     修改：在错的词下划一横线，并在其下面写出修改后的词。

     注意：1. 每处错误及其修改均仅限一词；

               2. 只允许修改10处，多者（从十一处起）不计分。

     It would be difficulty to imagine modern life with the telephone. It has become a useful instrument of

communication, save much time and travel by enabling people to talk one another over great distances.

Nowadays it is so easy to talk cross a continent or even overseas as it is to talk to one's next-door neighbor.

Therefore, it is in emergencies which the telephone really proves its usefulness. When there is a fire, and

when someone is suddenly ill, the first thing one thinks of it is “ Where is the nearest telephone?”

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男，46岁，6|近中邻面龋坏，不松动，已做根管治疗，曾做银汞合金充填，近中邻面事物嵌塞无法解决，现要求嵌体修复

为增强该患者嵌体修复的固位力，下述哪项措施是错误的（）。

A.利用面鸠尾固位形

B.轴壁上利用沟固位形

C.髓壁上利用钉固位形

D.加大洞缘斜面

E.适当加深洞形