【正确答案】
C
【答案解析】[听力原文] 23-25
W: I've been reading about a new healthful snack food. It's made from fish. Have you heard anything about it?
M: No, I haven't, but I don't like fish very much anyway.
W: Not to worry. Although it' s made primarily from fish, it actually doesn't have a fishy taste. In fact, it can be flavored with tomato, cheese, or chocolate, for instance.
M: How can it not taste fishy? Do you know how the snack food is made?
W: First, the fish is minced, and cooked, and fermented. Then water and starch are added to make a dough.
M: It sounds awful. Actually, the dough is very bland at that point, so the flavorings are added to give it some taste. Well, it still sounds a little strange, but I suppose this product will at least be low calorie and high protein like a health food.
W: Yes, you could call it that. And it has alone shelf life so it won't spoil quickly, and it's also easy to digest, and can be made from types of fish that usually aren't eaten, or from high grade fish by - products.
M: Hmmm. Have you got any samples? I might be willing to try the cheese flavored variety.
W: No, none of it seems to be available yet. I understand it, this fish snack food probably won't be in the stores for another couple of years. So you'll have a while to get used to the whole idea.
M: A couple of years, huh? It may just take me that long. But thanks for telling me about it.
23．What is the main topic of the conversation?
[解题思路] 紧紧抓住谈话的主题，about a new snack food，说到 hood，我们会联系到营养成分，制作过程等。
[详细解答] 对话第一句就是谈a new healthful food．听完整个对话你就明白所说的就是这种food．因此正确答案是C。