单项选择题


Questions 27 and 28 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now listen to the news.
What does the letter sent by European officials say

A.They will refer Iran to the UN Security Council.
B.Any restart Uranium enrichment would end the talks.
C.Britain would back the punitive measures.
D.The US would go back the negotiations.