题目内容
元代实行带有民族歧视与压迫色彩的四等人制，其中二等级是（）人。
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"A diabetic must monitor blood sugar;" helps explain that_______to all cases.
Patients generally fall into two groups: _______and_______.
Psychologists have changed their opinion that it is stupid and dangerous for people to deny uncomfortable information.
All patients should pay attention to_______.
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