The moon travels around the Earth because gravity（地心引力）pulls it．Most nights．the moon is the brightest thing in the sky．This is because it reflects（反射）fight from the Sun．It's hot during the day on the moon．When the Sun is above，the temperature is 243℃．At night，the temperature drops and it may be－163℃．A sunny day on the moon could kill you．But then，so could the night．

Shapes of the moon change from night to night．The picture shows the different phases（阶段）of the moon．

  ①New Moon——You can't see the moon even though no clouds cover it。

  ②＆⑧Crescent Moon——You can see less than half of the moon．

  ③＆⑦Half Moon——You can see half of the moon．

  ④＆⑥Gibbous Moon——You can see more than half of the moon．

  ⑤Full Moon——Y0u can see the whole moon．

1．This passage mainly tells us something about___________．

A．the Sun                B．the moon             C．gravity                        D．the planets

2．When the Sun is above，the temperature on the moon is___________．

A．as high as that on the Earth                       B．much higher than boiling water

    C．1ower than that on the Earth                      D．the same as that on the Earth

3．Which picture shows the Gibbous Moon?

A．                    B．                   C．                   D．

4．On Mid-autumn Day，we can see the moon at the place of ___________in the picture．

A．No．①               B．No．③               C．No．⑤          D．No．②