她对这种减肥产品的效果持怀疑态度，决定先看看用户评价。

Her ___skepticism about the weight-loss product led her to check customer reviews first.

科学方法中的怀疑论促使我们对所有假设保持谨慎态度。

The ___skepticism in scientific methods encourages us to be cautious about all hypotheses.

他对这个投资计划持怀疑态度，认为收益被夸大了。

He showed ___skepticism toward the investment plan, believing the returns were exaggerated.