Understanding the Solar System
Listen carefully to the following passage:
"Good morning, class! Today, we are going to learn about the solar system. The solar system consists of the sun, eight planets, and their moons. The planets revolve around the sun, and they are divided into two groups: inner planets and outer planets. The inner planets include Mercury, Venus, Earth, and Mars. They are smaller and rockier. In contrast, the outer planets are gas giants, which include Jupiter, Saturn, Uranus, and Neptune. Each planet has unique features and orbits the sun at different distances."
Note: This question has been adapted from its original format to accommodate a reading-based version. In the official TOEFL exam, speaking and listening sections require verbal responses and audio prompts, which are not represented here. Please note that this adaptation may not fully reflect the nature or difficulty of the official exam. The audio feature for these sections will be available soon.