题目内容：
根据下面资料，回答题 Body language is of great importance to humans．We carry many of the meanings through bodymovements．However, many forms of body language we consider to be fine in our country can get us intotrouble in other parts of the world．
A smile is one of the most common examples in different countries．While Americans smile freely atstrangers, in Russia this is considered strange and even impolite．In Asian countries a smile isn' tnecessarily an expression of joy but it can be used to express pain．
The acceptable physical distance is another major difference．In Latin America and the Middle Eastthe acceptable distance is much shorter than what most Europeans and Americans feel comfortable with．
Hand and arm movements as a form of body language are also very different among countries．Handshakes are usually acceptable almost everywhere, even between strangers；however, kissing on thecheek and touching on the shoulder or other body parts aren' t．For many people in Asia and other partsof the world, such actions are seen as a violation (侵犯)of one' s personal space．This is why you should
not touch others easily．
Eye contact(目光接触)is one of the forms of body language where the differences are most striking．InAmerica and Latin America looking the other person in the eye is a sign of respect．But in Asian countries,prolonged(过长的)eye contact is especially rude,so you should try your best not to do that．
To humans, body language is_______． A．important
B．funny
C．uncommon
D．strange
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