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65 A another B each C other D every

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33 Which of the following is NOT true of the scramjet engine？
A It has been used on passenger planes．
B The air it breathes does not put out the combustion flames．
C It works at speeds greater than five times the speed of sound．
D It goes as fast as a rocket．

38 How did the author feel upon first hearing what the excited wife said？
A She was amused.
B She was doubtful.
C She was scared.
D She was shocked

18 The 25 trials involved roughly the same number of participants
A Right
B Wrong
C Not mentioned

61
A people
B men
C women
D couples