完形填空。

　　We know the moon is about 380,000 kilometres away from the earth．It is 　　1　　 moving．And it is moving round the earth day and night．It goes round once a 　　2　　,or to be exact(准确的),once 29 and a half days．

The moon looks smaller than the sun．It looks the 　　3　　 biggest in the sky．But in fact it is one of the smallest．It is 　　4　　 us,so it looks big．

　　Once 29 and a half days,the whole moon looks 　　5　　 and this is the part turning to the sun．The part turning away 　　6　　 the sun looks dark．From this we know the moon has no light of its own．The light 　　7　　 the sun．

　　But the dark part of the moon is not 　　8　　．Usually we can just see it．We see the old moon in the new moon's 　　9　　．The light making us see the old moon does not come from the sun,　　10　　 from the earth．We all know water or 　　11　　 may reflect(反射)much of the sun's light．The whole earth reflects much of the sun's light to the 　　12　　 of the moon．So we can 　　13　　 the dark part of it．

　　　　14　　 there were any men on the moon,they would see our earth reflecting the light of the sun,again 　　15　　 a big mirror(镜子)in the sky．

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完形填空。

　　One day,two friends were walking through the desert．　　1　　 the journey they had a quarrel,and one friend hit 　　2　　 one in the face．

The one who was hit was hurt,　　3　　 he didn't say anything．Instead,he wrote in the sand,“Today my best friend hit me in the face．”

　　They kept on 　　4　　 until they found an oasis(绿洲)．They decided to get some water．The one who had been hit fell into the mire(泥潭)and was in danger,but the friend 　　5　　 him．

　　When he felt all right,he wrote on 　　6　　,“Today my best friend saved my life．”

　　The one who had hit and saved his best friend asked him,“After I 　　7　　 you,you wrote in the sand and now you write on a stone．　　8　　?”

　　The other friend replied,“When someone hurts us,we should write it down in sand where winds of forgiveness(宽恕)can blow 　　9　　 away．But when someone does something 　　10　　 for us,we must write it on stone where no wind can ever blow it away．”

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