题目：All around the world, friends greet each other in different ways. Usually, friends shake hands. Or friends wave at each other. man takes off his hat. woman smiles. It is different in some places. In Greenland, people touch noses to greet each other. In Japan, a person bends his head. In other places friends hold each other in arms. Some kiss each other on both faces. Words are used as greetings, too. "Be joyful!" the ancient Greeks said. The ancient Romans said, "Hail!" Americans and English say "Hello!" or "How are you?" And in China how do people greet? The ancient Greeks said“______” to greet each other.
A:Hello
B:Hail
C:How are you
D:Be joyful
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