In this section, you will hear one passage. At the end of the passage, you will hear four questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D).A、The term “dwarf planet” was created.
B、Pluto is no longer a planet.
C、Scientists had to make new rules for the definition of planet.
D、Eight dwarf planets were discovered.