问题 问答题 简答题

味之间的相互作用?

答案

参考答案:

①味的对比现象:两种或两种以上的呈味物质,经适当调配,使其中一种呈味物质的原味觉更可口的现象

②味的相乘现象:两种具有相同味感的物质共同使用,其味感觉强度超过两者单独使用的味觉之和,又称为味的协同效应

③味的消杀现象:一种呈味物质能够减弱另一种呈味物质味觉强度的现象,又称为味的拮抗作用

④味的变调效应:两种呈味物质相互影响而导致其味感发生改变的现象

单项选择题
阅读理解

阅读理解。

      Alice always wanted to be a singer. Music was the most important thing in her life. To tell you the truth,

she took lessons for years, and practiced every day, but her voice didn't improve. In fact, it didn't get better;

it just got louder.

      Her teacher gave up in the end and stopped the lessons, but Alice refused to give in. One day she decided

to give a concert and invited her teacher to attend.

      The teacher was very worried about what to say after the concert. She knew it would be terrible and it

was. She didn't want to tell a lie, but she didn't want to hurt Alice's feelings, either. At last, she got an idea

and went backstage to greet her student.

       "Well," said Alice, "what did you think of my singing?"

       "My dear," said the teacher, "you'll never be better than you were tonight."

1. Alice wanted to be a singer because she _____. [ ]

A. was good at singing

B. could do nothing but sing

C. had a good teacher

D. was most interested in music

2. Alice's teacher stopped the lessons because _____. [ ]

A. Alice didn't make any improvement in singing

B. Alice had taken lessons for years

C. Alice didn't work hard enough

D. Alice was so proud and wouldn't listen to her

3. What did the teacher really mean by saying "You'll never be better than you were tonight."? [ ]

A. You gave a wonderful concert tonight.

B. You won't make any improvement in future.

C. You have never sung so well before.

D. You did much better before than tonight.