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417. Because these speeding particles' compositions were quite different from those of other low-energy cosmic rays, scientists dubbed them ______ cosmic rays.
A. intermittent
B. transitory
C. resilient
D. anomalous
E. mercurial
418. Tania excels at dancing the merengue, having ______ the steps during her childhood years in the Dominican Republic.
A. diverted
B. mastered
C. ignored
D. confused
E. promised
