问题 单项选择题 B型题

颌板()

A.由不锈钢丝弯制而成,通过钢丝的弹性形变而释放或储存能量

B.形变范围较大,力量柔和持续,用于颌间牵引

C.通过加大肌张力对牙产生矫治作用

D.通过磁场作用对错位牙产生矫治作用

E.橡皮制成,用于结扎固定弓丝于托槽槽沟内

答案

参考答案:C

选择题
单项选择题

D

Love, success, happiness, family and freedom—how important are these values to you Here is one interview which explores the fundamental questions in life.

Question: Could you introduce yourself first

Answer: My name is Misbah, 27 years old. I was born in a war-torn area. Right now I’m a web designer.

Q: What are your great memories

A: My parents used to take us to hunt birds, climb trees, and play in the fields. For me it was like a holiday because we were going to have fun all day long. Those are my great memories.

Q: Does your childhood mean a lot to you

A: Yes. As life was very" hard, I used to work to help bring money in for the family. I spent my childhood working, with responsibilities beyond my age. However, it taught me to deal with problems all alone. I learnt to be independent.

Q: What changes would you like to make in your life

A : If I could change something in my life, I’ d change it so that my childhood could have taken place in another area. I would have loved to live with my family in freedom. Who cares whether we have much money, or whether we have a beautiful house It doesn’t matter as long as I can live with my family and we are safe.

Q: How do you get along with your parents

A : My parents supported me until I came of age. I want to give back what I’ ve got. That’ s our way. But I am working in another city. My only contact with my parents now is through the phone, but I hate using it. It filters(过滤) out your emotion and leaves your voice only. My deepest feelings should be passed through sight, hearing and touch.

In Misbah’s childhood,().

A. he was free from worry

B. he liked living in the countryside

C. he was fond of getting close to nature

D. he often spent holidays with his family