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.
How many unidentified bodies are likely to be Burmese

A．his knowledge of science and his own experiences in adventure.
B．his imagination and his love for science.
C．his own experiences in adventure and his imagination.
D．his knowledge of science and his imagination.

A．The China-U.S. relations.
B．The Nixon Library.
C．President Nixon.
D．The Youth Summit.