This research may be biased, however, as ill health often makes older people more dependent and thereby increases contact with family members.
2016年6月四级真题（第一套）阅读 Section A
英语六级真题
Assuming that your teacher is neither biased nor corrupt and that her system conforms to school rules, you can't fault her ethics.
出自-2010年6月阅读原文
But a lot of information we get about human groups is through biased sources, like how they are represented in the media.
2017年12月六级真题（第二套）听力 Section C
柯林斯高阶英汉双解学习词典释义
ADJ-GRADED
有偏见的；有成见的；偏袒一方的
If someone is biased, they prefer one group of people to another, and behave unfairly as a result. You can also say that a process or system is biased .