Many experts remain skeptical about his claims.

2023-07-03

A:doubtful
B:untouched
C:certain
D:silent

参考答案:A

本句意思:许多专家对他的宣称仍很怀疑。skeptical怀疑的。doubtful怀疑的;Un- touched未触动过的,未受影响的;certain某个,肯定的;silent沉默的。