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172 -‘Match 1' in the passage refers to ----- .
A) a unit of measure for supersonic speed
B) an extremely powerful Jet engine
C) the name of the vehicle which broke the sound barrier
D) a spot in the Black Rock Desert
E) a wingless jet
173 -It is stated in the passage that ----- .
A) 1000 cars took part in the attempt to break the sound barrier
B) the sound barrier can only be broken by aircraft
C) flight over the speed of sound is called supersonic
D) a jet plane without wings has broken the sound barrier on land
E) a British team broke the sound barrier on land in the USA
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