Read the passage below. Choose the most suitable word from the box and fill in the blanks.
Use each word once only.
footprints size temperatures
bright features dark
The Moon is Earth's naturual satellite. It is more than one quarter the (1) ______________ of Earth itself. There are many interesting (2) ______________ such as craters, mountain ranges and lava plains on the surface of the moon. The (3) ____________ left by astronauts on the moon will last for centuries because there is no wind and weather. As there is no atmosphere to trap heat, (4) _____________ on the Moon are extreme, ranging from 100°C at noon to -173°C at night.
The Mooon does not produce its own light, but looks (5) _____________ because it reflects light from the Sun. Think of the Sun as a light bulb, and the Moon as a mirror, reflecting light from the light bulb.
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