- But as with any study of this kind, it was unclear if that was the cause—or if breakfast-skippers were just more likely to be overweight to begin with.
2019年12月四級真題（第三套）閱讀 Section B
- is abysmal (糟透的) , the recovery's strength unclear.
出自-2013年6月閱讀原文
- Moffitt said it's still unclear why some children have better self-control than others, though she says other researchers have found that it's mostly a learned behavior, with relatively little genetic influence.
2016年6月六級真題（第一套）聽力 Section C
- But distinctions that were sharp to us as children become unclear; we are numb to new stimulation, new ideas.
2018年高考英語天津卷 閱讀理解 閱讀D 原文
- The teacher may require a second proposal if the first is off-topic or unclear.
2019年高考英語天津卷 閱讀理解 閱讀A 原文
- We know that, while awake, fresh memories are recorded by reinforcing connections between brain cells, but the memory processes that take place while we sleep have been unclear.
2017年高考英語北京卷 閱讀理解 七選五 原文
- Also unclear is why Microsoft has gone it alone.
出自-2013年考研閱讀原文
- Also unclear is why microsoft has gone it alone.
2013年考研真題（英語一）閱讀理解 Section Ⅱ
- But the policy is unclear and contradictory.
2012年考研真題（英語二）閱讀理解 Section Ⅱ
- For example, it is unclear whether the sequencing of a whole genome violates the patents of individual genes within it.
2012年考研真題（英語二）閱讀理解 Section Ⅱ