According to the course, although psychological barriers are （）, they can be just as impenetrable as more obvious barriers, such as language differences.

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According to the course, although psychological barriers are （）, they can be just as impenetrable as more obvious barriers, such as language differences.

A.stumble

B.invisible

C.intentionally

D.equipped

正确答案：B

Tag：英语口语直通车时间：2021-03-29 21:07:02

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