举一反三
- One can jump (high) __________ on the moon than on the earth.
- A body of a given mass would weigh ____ on the moon than on the earth.
- 10. The moon is completely empty of water because the force of gravity on the moon is much less than on the earth.
- The earth is big. The moon is small. About 50 moons equal to one earth. </p></p>
- Why does the earth become cool? A: Because the sun gives the heat to the earth. B: Because the moon gives the wind to the earth. C: Because the earth rotates . D: Because the sun's heat bounces to the space.
内容
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On the moon, things aren’t ________ they are on the earth. A: so heavy as B: as heavier as C: as heavy than D: heavy than
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Walking on the moon is________walking on the earth. A: not so easy as B: more easy than C: as easily as D: more easier than
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1 One word is wrong in each sentence. Cross it out and write the correct word. ► The sun circles the earth. moon 1 The planets are in the solar space. ____ 2 The earth revolves around the moon. ____ 3 The sun is a planet. ____ 4 Man first walked on the sun in 1969. ____ 5 Venus is a star. ____ 6 We can send planes into space. ____ 7 The stars are part of the earth. ____
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青书学堂: ( )The pictures of the moon taken from the spacecraft are _______ than those taken from the earth.
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Why is the second theory sometimes referred to as the Mars Theory A: Earth's moon used to orbit Mars. B: Mars was captured by the gravitational field of the Sun, C: A planet the size of Mars collided with Earth. D: Mars is larger than Eart