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LIYAQI LIYAQI
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6 years ago
In an ideal study session (as described in the text), students are in deep concentration for:
 
  a. 20 minutes
 b. 30 minutes
 c. 40 minutes
 d. 50 minutes
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indian394indian394
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6 years ago
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LIYAQI Author
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6 years ago
Just got PERFECT on my quiz
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Yesterday
Correct Slight Smile TY
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2 hours ago
Brilliant
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