答案解析:
1.答案: makes it possible to have cross-culture/cross-cultural communication
详解:
考查常用表达: "使...成为可能"的表达为make it possible to do sth.。真正宾语是cross-culture/cross-cultural communication。
考查高频词汇: "跨文化"的表达为cross-culture,也可用其形容词cross-cultural; "交流" 的表达为communication。
2.答案: he wouldn't have been/become addicated to smoking.
详解:
考查虚拟语气: 由if...had done引导,表示对过去情况的虚拟,从句时态过去完成时,主句应用would have done的结构。