1 . We see examples of unconscious body language very often, yet there is also “learned” body language, which__________(变化；使不同）from culture to culture.（根据汉语提示填空）

2 . Not all cultures greet each other the same way, nor     __________________________________________with touching or distance between people. （根据课文内容填空）

3 . Orange juice c____________much vitamin C and is beneficial to people's health. （根据首字母填空）