What was the most probable cause for Lisa’s weakness?

• A、She had run a long way．

• B、She felt hot in the subwav．

• C、She had done a lot of work．
  

• D、She had donated blood the night before．

 We won’t keep winning games____we keep playing well.

• A、because
  

• B、unless
  

• C、when
  

• D、while

 假定你是中國文化知識大賽組委員會主席李華，寫信祝賀參賽選手John Smith獲得本次大賽一等獎，并通知其以下事項：
        1．出席1月10日晚在北京友誼賓館舉行的慶祝晚會。
        2．贏得了免費中國10日游。
        3．如果能夠參加旅游，應(yīng)將信中所附表格填好，并準備好護照(passport)。組委會將負責其他相關(guān)事宜：
        注意：詞數(shù)應(yīng)為100左右
        October l7th，2012
        Dear Mr．John Smith，
        ____________________________________________________________
        ______________________________________________________________
        Sincerely yours，
        Li Hua
        Chair
        Committee of the Chinese Culture Contest