- But the status quo can be problematic, since a change in the course of action can sometimes be important and lead to a positive outcome.
2018年6月六級真題（第三套）閱讀 Section C
- There have been some indications that extra protein makes the kidneys work harder, which could be problematic for individuals with a history of kidney disease and for them, the supplements may increase the risk of kidney stones, the says.
2019年12月六級真題（第二套）閱讀 Section B
- This might mean implementing policy such as a plastic tax that adds a cost to environmentally problematic action, or banning single-use plastics altogether.
2019年考研真題（英語二）閱讀理解 Section Ⅱ