根据句意及首字母提示补全单词。

1. Liu Xiang broke the Olympic r_______ and won a gold medal in the 2004 Athens Olympics.

2. They are l_______ for Beijing the day after tomorrow.

3. Cui Hua, shall we s_______ the sour cabbage (酸菜)?

4. When you get home from school, you should r_______ yourself with music.

5. Jane is always careful, but her brother is always c_______.

以下提供了若干个病例，每个病例下设若干个与病例有关的问题，每个问题下面都有 A、B、C、D、E五个备选答案。请从中选择一个最佳答案。病例中提供了回答问题所需要的相关信息，要根据病例回答问题，问题与问题之间都是相互独立的。

最有可能的诊断()。

A．先兆流产

B．异位妊娠

C．难免流产

D．不全流产

E．完全流产