A）Linda：Excuse me，Barbara，can I ask you something？
Barbara：Yes，what is it？
Linda：Well，some of us are going to Shades disco tonight．Is it all right if I stay out a little later？
Barbara：How much later？
Linda：Until one o'clock maybe．
Barbara：One o'clock！No，that's far too late！
Linda：But it doesn't start until nine thirty．
Barbara：Well，I think two hours is enough．No later than midnight，please．
Linda：OK，I'll try not to be late，but you know how few buses there are at that time．
Barbara：Well，if you leave the disco at 11．30，you shouldn't have any prob- lems．
Linda：Could I have a front door key，please？
Barbara：No，I'll wait up for you．
B）The United States of Americais in the north part of America．It has an area of 9，372，576 square kilometers．Its capital is Washington DC．It has 50states．It has a population of 266，578，000．Its native language is English，with 6％of the population speaking Spanish as a first language．Most of its people live until around 75 years old．Its government is something like federal republic．The law is made by the national conGREss．
