阅读理解。 When you're invented to have dinner in a foreigner's home, please remember the followings: At table, when the hostess picks up her napkin, you may pick up yours and put it on your legs. If a servant passes food around, he will pass the dish to you at your left hand so that you can easily serve yourself with your right hand. Never serve yourself while the dish is on your right; it is the turn of your neighbor on the right. Do not reach across the table or in front of someone to get something, that is not polite. Ask him or her to pass it to you. There are things in the middle of the table, such as bread, butter and candies. You shouldn't take any until the hostess tells the servant to pass them to you. Do not leave your seat without saying anything. If you need to leave the table to go to the washroom or do something else, you should say 'Excuse me for a moment, please. ' 阅读短文，判断正（T）误（F）。 (     ) 1. You should put your napkin on your legs before the hostess picks up hers. (     ) 2. The dish is passed to you on either of your side. (     ) 3.If the food is far from you, you shouldn't stand up to serve yourself. (     ) 4. You may take any food at any time. (     ) 5. When you have to leave your seat, you need to say 'Excuse me for a moment, please. '