Question 27 to 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 passage. Which statement can best express the main idea of this news item
A．Nuclear technology is available on the black market. B．European countries have cut down on defense budgets. C．NATO is being urged by the U.S. to set up a new defense system. D．NATO allies are expected to hold a summit.