单项选择题


Questions 27 and 28 are based on the fallowing news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now listen to the news.
Why are there two teams to study the same ice

A.They belong to different countries.
B.They compete against each other.
C.They want to confirm their findings.
D.There are too many ices for only one team.