The 'last barrier'(ParA.3) mentioned in Milano's e-mail refers to
A.the old culture of curiosity.
B.lack of direct communication.
C.racial and cultural relations.
D.the differences between peoplE.

A.the
B.
B.lack
C.
C.racial
D.
D.the

【参考答案】

B
解析：这是一道词义题。依据上下文'人们被鼓励着就涉及不同种族、民族和文化的话题进行无保留、无障碍的交流'可以......

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