SECTION A CONVFRSATIONS In this section you
will hear several conversations. Listen to the conversations carefully and then
answer the questions’ that follow.
Questions 1 to 4 are based on the
following conversation. At the end of the conversation, you will be given 20
seconds to answer the questions. Now listen to the
conversation.
What is the conversation mainly about
A．The possible existence of life on other planets. B．Methods for building powerful new telescopes. C．A technical problem that astronomers can’t solve. D．The discovery of planets orbiting distant stars.