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Haydena Haydena
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6 years ago
Because any one of more than ________ viruses can cause a common cold, symptoms tend to vary greatly.
 
  a. 22
  b. 20
  c. 200
  d. 2,000
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YatesmYatesm
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6 years ago
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Haydena Author
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6 years ago
Smart ... Thanks!
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Yesterday
Thanks
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2 hours ago
Just got PERFECT on my quiz
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