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语音：请选出每组中下划线字母发音不同的单词（共5小题；每小题1分，满分5分）。
A. loose B. wool C. cool D. school
A. track B. pace C. flame D. persuade
A. atlas B. destroy C. insurance D. disaster
A. calm B. recover C. curtain D. official
A. thunder B. breathe C. earthquake D. beneath
1.A. loose B. wool C. cool D. school
2.A. track B. pace C. flame D. persuade
3.A. atlas B. destroy C. insurance D. disaster
4.A. calm B. recover C. curtain D. official
5.A. thunder B. breathe C. earthquake D. beneath