Which of the following statements are the demerits of a commonly used language?

A、A global language improve the communication among different people and cultures.;

B、A bridge language is used for communicating something common in every culture, and cannot translate the unique part. It will damage the heritage and transmission of the traditional culture.;

C、English as a global language transmits a lot western-oriented values and beliefs all over the world, and affects the heritage of the local culture.;

D、Each culture is deeply rooted in its nation, and thus cannot be represented by a bridge language.