Teacher's Guide & Activity

　　教师指导与活动

　　Activity

　　List and discuss several possible connections between food and mood－either some you have heard about or some that are mentioned in the article. Does your personal experience suggest that some of these associations may be true? Does any solid scientific evidence support them?

　　What does a healthy diet mean to you? How can you choose foods that promote good health but are still fun and taste good? Create a list of Good Food Guidelines based on what you know or have heard. Revise your guidelines as you read and discuss this issue.

　　Reading Comprehension

　　What tastes good in one culture is rejected in another. Insects, dried seaweed, and the saliva of sparrows are delicacies to some. Sound gross? Where do you think honey comes from?

　　How might food and eating be different 100 years from now? What foods might be popular? Will people have changed the way they eat? Think creatively, but be ready to defend your predictions with logic.

　　How might future scientific discoveries affect our knowledge of food and emotion? How might people use such knowledge, either today or in the future?

　　In what ways do plant breeders and food scientists genetically alter foods? Are some methods safer than others, in your opinion?

　　What benefits are expected?

　　Why do some people worry about “designer foods”? Do you think their fears are justified?

　　Glossary

　　algae 藻类（植物）

　　alginate (化)褐藻酸盐

　　bacterial 细菌的

　　calcium 钙

　　chemosensory 感受化学刺激的

　　chromosome 染色体

　　drought 干旱

　　enzyme （生化）酶

　　gene 基因

　　helix 螺旋结构，螺旋形物品

　　impulse 冲动，推动

　　indulgence 沉迷，嗜好

　　leprosy 麻风病

　　ligase （生化）连接酶

　　macho 男子汉，男子气概

　　menthol 薄荷醇

　　metabolize （使）新陈代谢

　　molecule 分子；克分子

　　neurologist 神经病学家

　　nucleus 细胞核

　　nutrition 营养

　　parsley 西芹

　　pesticide 杀虫剂

　　plasmid （生）质体，质粒

　　protein 蛋白质

　　prototype 样品

　　serendipity 意外的发现

　　sucrose （化）蔗糖

　　toxin （生）毒素

　　trigeminal 三叉神经的