The universe

the universe  ‘How many stars are there in the universe?’

an asteroid 小行星 ‘The photograph shows an asteroid near Jupiter.’

a star  ‘The sky was very clear. I could see thousands of stars.’

a comet  ‘The comet will be visible in the night sky.’

a galaxy  ‘How far is the galaxy from Earth?’

a constellation  ‘How many constellations can you name?’

a meteor  ‘Did you just see that meteor?’

a planet  ‘How many planets can been seen in the sky tonight?’

a satellite  ‘Three new telecommunications satellites are being launched this week.’

The solar system

Mercury 水星 ‘Mercury is the closest planet to the Sun.’

Earth  ‘Mars is further from the Sun than Earth.’

Uranus天王星  ‘Uranus is further from the Sun than Jupiter is.’

Venus金星  ‘Venus is the second closest planet to the Sun.’

Mars  ‘Mars is sometimes referred to as the Red Planet.’

Neptune海王星 ‘Neptune is further from the Sun than Earth.’

Saturn土星  ‘We could see the rings around Saturn using the telescope.’

Jupiter木星  ‘Jupiter is the largest planet in the solar system.’

the solar system  ‘I’m planning to watch a documentary about the solar system this evening.’

the Moon  ‘I can’t see the Moon; it’s too cloudy.’

the Sun  ‘The planets orbit around the Sun.’

根据句子选择恰当的单词

1. The _____ belt is between the planets Mars and Jupiter. 

asteroid 

galaxy 

universe 

satellite

2. In our solar system, _____ is nearest to the Sun. 

Mercury 

Neptune 

Earth 

The Moon

3. _____ has the largest orbit around the Sun of all the planets in our solar system. 

Neptune 

Mercury 

Jupiter 

Mars

4. I could tell that the point of light in the sky was _____ and not a star because it had a tail. 

a comet  

a constellation 

the galaxy 

Saturn

5. There are eight _____ orbiting the Sun in our solar system. 

planets

asteroids 

comets 

constellations

6. _____ is the planet most famous for the rings that surround it. 

Saturn 

Earth 

The Moon 

A satellite

7. _____ is one of the giant planets in our solar system. 

Uranus

Mercury 

The Moon 

An eclipse

8. _____ has a much larger size than the other planets in our solar system. 

Jupiter 

Mercury 

The Sun 

The Moon

1. asteroid 2. Mercury  3. Neptune 4. a comet 5.planets 6. Saturn 7. Uranus 8.Jupiter