BBC news 2010-07-14 加文本

1.The American Secretary of State Hillary Clinton has said the Iranian nuclear scientist Shahram Amari, who turned up at the Iranian Interests Section of the Pakistani embassy in Washington, is and always has been free to go home.

turn up出现

例句：He didn't turn up until half an hour later.
      半小时后他才出现。

2.Adding to the uncertainty, videotapes showing a man purporting to be Mr Amiri have been circulating, offering conflicting (of counts,口误) accounts of what happened to him.

add to增加, 加强

例句：This lesson adds to the value of the book.
      这一课增加了这本书的价值。

3.What drives some of this is a fear that some new arrivals and some ethnic groups are clinging to customs that set them apart with the risk of separate, parallel communities developing.

cling to坚持, 忠于(某观念、信条等)

例句：She clung to the hope that her son was not dead.
      她抱定儿子并没有死的希望不放。

      He clung to his own view.
      他坚持己见。

4.many of them in Africa. The UN figures suggest that young people are changing their sexual behavior in response to AIDS prevention campaigns.

in response to对…做出反应

例句：She laughed in response to his jokes.
      他的话引起她大笑。

      The quick recovery was truly in response to medication.
       这次迅速康复确实是对药物治疗的反应。