单选

The

  • author seems to
  • be suspi
  • cious of the public-health success because    [ A ] the message that smoking kills isn't voice
  • d loudly enough.    [ B ] unskilled workers are more willingto pay for the heavy tax in cigarettes.    [ C ] single mothers are more likely touse their benefits to buy cigarettes.    [ D ] the po
参考答案
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