Ⅰ.阅读理解(共15小题；每小题2分，满分30分)
A
We know the westerners like to plan for their time carefully in order to do all the things that are important to them.So if your American or English friend asks you to dinner，he usually invites you a week ahead.But if you really have no time and can't go to the dinner，you can ring him to say sorry.The dinner is usually served at home，sometimes at a restaurant.You should get there on time，and don't forget to put on your fine clothes.It is also a good idea to take some little presents to your friend，such as flowers，chocolates and so on.When you are at dinner，you should also observe(遵守)some other customs.Here I'll give you some dos and don'ts about them in the following:
