听力原文：W: Well, I read a very interesting article the other day about the Canadian food market. M: I suppose everybody is interested in food, even if it's trying not to eat. Why Canada? I know that's where you come from, but isn't it just all North America really? W: No, that's why I thought this article was interesting. Although lots of US companies are well established in Canada, and vice versa, there are still subtle differences between the two markets. It says here 'the Canadian market is definitely not a northern clone of the US'. I like that. And it says that if you understand these differences, it can have a big impact on successful food marketing. M: So, I know that Canada has a big French-speaking population in Quebec, is this what they're referring to? W: Not only French and English speakers, there are many different ethnic groups in Canada. It's really quite multicultural. For example Toronto has large Asian and Italian populations, and Vancouver's got a large Asian population too. And because Canada's population is small, these groups make quite an impact, introducing new styles of cooking. So you can see lots of unfamiliar vegetables and things in the markets and new restaurants are opening every day. It's great if you love trying out new foods, as many people do! M: Which kinds of food are becoming popular? W: Well, some Asian food I'd say, has been popular for quite a while like Chinese, but now South East Asian restaurants are becoming very fashionable. Then there's Mediterranean of course, such as Greek, Italian and so on, but Caribbean and Mexican food is really taking off among young people these days. M: So are the supermarkets starting to stock new ingredients that are needed to prepare these foods at home, you know. all those unusual sauces? W: Yes, that's fight, it's quite interesting going to the supermarket, isn't it? And noticing how they are introducing sections for foods of different nationalities—you can buy quite exotic products locally these days. The article mentioned supermarket chains. In Canada, there are 8 major national supermarket chains controlling most retail markets countrywide, so that when they introduce changes they can happen quite rapidly. Questions: 19.What did the man think of the food market in Canada? 20.Which is not true according to the conversation? 21.Which kind of food is becoming popular among young people in Canada? 22.What is not mentioned about the food market in Canada, according to the conversation? (39)