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(    )6.A.cool       B.hot       C.cold       D.warm

(    )5.A.bigger     B.biggest   C.smaller    D.smallest

(    )4.A.is it      B.it is     C.is that    D.that is

(    )3.A.going      B.goes      C.to go      D.go

(    )2.A.moon       B.earth     C.star       D.sun

(    )1.A. before    B. later    C.ago        D.after

(    )20.Jack ________his homework when someone knocked at the door.

      A. is doing     B. was doing      C.  did      D.will do

A long time ____people thought that the sun went round the earth .In some countries people even said that the ____was a god . They thought the god drove across the sky each day on a golden horse. Now we know the earth goes round the sun . It takes the earth a year_____all way round the sun . Today men even know how far ____for the earth to go round the sun .They tell us that the earth travels over a thousand miles a minute on its journey round the sun.

The sun is really a star . It is much ____than the earth and it is very ____. Some people have been to the moon but we know that ____can ever go to the sun . It is far too hot _____people to live ____near it . The sun is _____times heavier than the earth and more than million times larger.

(    )19.________the music ,please.It’s too loud.

      A.Turn  up    B.Turn over      C.Turn to           D.Turn down

(    )18.I will ____ finish the work .

       A.do my better to     B.do my better at

C.do my best to       D.do my best at

(    )17.Mr. White makes a living____bikes.

       A.by sell      B.by selling    C.with sell     D.with selling