阅读理解。 In Canada and the U.S.A, people enjoy entertaining (请客) at home. They often invite friends over for a meal, a party, or just for coffee and a conversation. Here are the kinds of things people say when they invite someone to their home: 'Would you like to come over for dinner Saturday night?' 'Hey, we’re having a party on Friday. Can you come?' To reply to an invitation, either say thank you and accept, or say you‘re sorry and give an excuse: 'Thanks, I‘d love to. What time would you like me to come?' or 'Oh, sorry, I have tickets for a movie.' Sometimes, however (但是), people use expressions that sound like invitations but which are not real invitations. For example: 'Please come over for a drink sometime (某个时候).' 'Why not get together for a party sometime?' 'Why don’t you come over and see us sometime soon?' They are really just polite ways of ending a conversation. They are not real invitations because they don‘t mention (提到) a specific (确定的) time or date. They just show that the person is trying to be friendly. To reply the expressions like these, people just say'Sure, that would be great!' or 'OK. Yes, thanks.' So next time when you hear what sounds like an invitation, listen carefully. Is it a real invitation or the person is just being friendly? 1. Why do Canadians and Americans often invite friends for meals at home? A. Because they can save time. B. Because they can spend less money. C. Because they enjoy entertaining at home. D. Because they have modern and beautiful houses. 2. Which of the following is a real invitation? A. If you‘re free, let‘s go for a drink sometime. B. Please go to the cinema with me some day. C. Would you like to have a cup of tea with us sometime? D. I’ve two tickets here.Can you go to the concert with me? 3. If people say 'Let's get together for lunch some day.', you just say '____'. A. That would be nice. B. How about this weekend? C. Oh, sorry, I'm very busy. D. That's great. I'll be there on time. 4. People use 'an unreal invitation' in order to (为了) show that ____. A. they're trying to be friendly B. they're trying to be helpful C. they're trying to make friends with others D. They haven't got ready (准备) for a party yet 5. The passage is mainly about ____. A. entertainment at home B. real invitations or not C. expressions of starting of a conversation D. ways of ending a conversation