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三、完型填空
21、根据下列短文，回答第21-35题：Every woman dreams of receiving a huge priceless diamond.Now space scientists 21____ that they have discovered the largest diamond in the universe．But it’s well 22____ the reach of the most loves truck men because it's 50 light years away, to be 23____．
Measuring 2,500 miles across and weighing five million trillionpounds，the rock Was found on Valentine’ s Day 24____ in the core of a white dwarf star, and it has excited the 25____ world.
“It’s the mother of all diamonds，”said Travis Metcalfe，26____ led the team of researchers at the Harvard-Smithsonian Centre，“and you would need a jeweler’S loupe(专用放大镜)，the size of the Sun，to 27____ this diamond．”
The largest diamond 28____ on earth was the 3，106-carat(克拉)Cullinan．It Was cut 29____ nine major stones，including the 530-carat Star of Africa，now a part of the Crown Jewels．Diamonds were 30____ discovered in India more than 2,800 years ago．The Ancient Romans 31____ that the stones were broken pieces of stars that had 32____ to earth．In Ancient Egypt，diamonds were used in funerals. In the Middle Ages，men 33____ them to symbolize their courage and strength．The 34____ of giving them as presents dates from 1477，35____ Maximilian，the prince of Austria, gave a diamond ring to Mary of Burgundy．填入21处的选项是（）。
A．admit
B．tell
C．explore
D．reveal

22、填入22处的选项是（）。
A．under
B．over
C．beyond
D．within

23、填入23处的选项是（）。
A．precise
B．certain
C．clear
D．correct

24、填入24处的选项是（）。
A．buried
B．blocked
C．built
D．blended

25、填入25处的选项是（）。
A．physical
B．scientific
C．material
D．natural

26、填入26处的选项是（）。
A．who
B．which
C．that
D．he

27、填入27处的选项是（）。
A．measure
B．register
C．grade
D．weigh

28、填入28处的选项是（）。
A．cultivated
B．drawn
C．caught
D．found

29、填入29处的选项是（）。
A．from
B．into
C．by
D．with

30、填入30处的选项是（）。
A．first
B．last
C．finally
D．newly

31、填入31处的选项是（）。
A．questioned
B．believed
C．suspected
D．confirmed

32、填入32处的选项是（）。
A．fallen
B．dived
C．left
D．burned

33、填入33处的选项是（）。
A．decorated
B．viewed
C．took
D．wore

34、填入34处的选项是（）。
A．practice
B．tradition
C．habit
D．culture

35、填入35处的选项是（）。
A．what
B．while
C．that
D．when