26岁女性，3小时前摔伤左前臂，检查发现前臂肿胀、瘀斑、剧痛，并伴有短缩成角畸形，诊断首先考虑（）

A.前臂软组织挫伤

B.尺神经损伤

C.尺桡骨双骨折

D.桡骨骨折

E.尺骨骨折

In writing up the logbook at the end of your watch,you make an erron in writing an entry. What is the proper means of correcting this error?（）.

A.cross out the error with a single line,and write the correct entry ,then initialit

B.carefully and neatly erase the and rewrite it correctly

C.remove this page of the log book , and rewrite all entries on a clean page

D.Blot out the error completely and rewrite the entry correctly