1. 根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    People in different countries have different ways of doing things. Something is 1 in one country, but it may be quite impolite in another. In Britain, you mustn't lift your bowl to your 2 when you are having some liquid(液体) food. But it's 3 in China. And in Japan you even needn't worry about making   4 while you are having it. It shows that you're enjoying it. But people in Britain think it is bad manners. If you are a visitor in Mongolia, what manners do they wish 5 to have? They wish you to have a loud “burp”(打嗝) 6 you finish eating. Burping shows that you like the food.

    In Britain, you should try not to 7 your hands on the table when you're having a meal. In Mexico, however, guests may keep their hands on the table during a meal. But in Arab(阿拉伯) countries you must be very careful with your hands. You 8 eat with your left hand. Arabs consider(认为) it very 9 manners eating with left hands. So when you are in other countries, 10 carefully and follow them. As a saying goes, “Do as the Romans do.”