问题 选择题

下列条件有利于食品保鲜的是  

①真空      ②低温      ③常温       ④灭菌       ⑤潮湿       ⑥防腐剂

A.①②④⑤

B.①③④⑥

C.②③④⑤

D.①②④⑥

答案

答案:D

题目分析:传统的保鲜方法有盐腌、糖渍、干制、酒泡、窖藏等,随着社会的发展和人们生活水平的提高,人们需要得到常见的新鲜的食品,所以,近年来食品储存技术发展迅速,现代的储藏方法主要有罐藏、脱水、冷冻、真空包装、添加防腐剂、使用保鲜膜保存等,食品保存的原理是杀死或抑制细菌、真菌等微生物的生长和繁殖,常温、潮湿不能杀死或抑制细菌的生长。

点评:此题为基础题,较易,食品保存的方法多种多样,不同的食品保存的方法可能不同,可结合着具体的实例掌握。

阅读理解

My Year Abroad                                                           

This month in Travelers Corner there are three teenagers’ experiences in year-abroad programmes.

Mariko Okada – Tokyo

My year abroad in the United States was a fantastic experience. I’m not a shy person, and I was very comfortable speaking to everyone. So I got lots of speaking practice. I also learned lots of interesting things about American culture. When I got home, my friends all said that I had improved so much! I hope to go back again in the future.

Carla Fonseca – Rio de Janeiro

I spent last year studying English in London. I’m from a small town, and London is a very big city. Sometimes I felt it was too big. There were so many people to talk to, but I always felt bad about my English. I missed my family, and I really missed my two cats. My roommate was always using our telephone, so I hardly had the chance for a nice long talk with my parents. I think it was a good experience for me, but I’m glad to be home!

Alvin Chen – Hong Kong

Studying in New Zealand was a fun experience for me, but it was also lots of hard work! I had English classes six hours a day, five days a week——with lots of homework. I also kept a diary of my experience. I like to write, and I wrote two or three pages in my diary every day. On Saturdays, my homestay family took me to lots of interesting places and showed me so many wonderful things about the culture. I’m really glad I went!

小题1:All the three teenagers went abroad           .

A.to study English

B.to visit friends

C.to have a holiday

D.to find a job小题2:Who didn’t really enjoy the stay in a foreign country very much?

A.Mariko.

B.Carla.

C.Alvin.

D.None of them.小题3:Travelers Corner is most probably         .

A.a sports club newsletter

B.a science documentary

C.a travel magazine

D.a news website

单项选择题