问题 单项选择题

以下关于前牙反说法不正确的是().

A.牙齿萌出和替换过程中的障碍可能造成牙性前牙反

B.乳尖牙磨耗不足是功能性前牙反的常见病因

C.功能性前牙反在息止颌位时侧面型较正中位时有明显改善

D.不能后退至切对切的前牙反都没有功能性因素

E.骨性反常伴有功能性因素

答案

参考答案:D

单项选择题
阅读理解

阅读理解

                                                         Learning a Second Language

   Some people learn a second language easily. Others have trouble learning a new language. How

can you help yourself learn a new language, such as English? There are several ways to make learning

English a little easier and more interesting.

   The first step is to feel positive about learning English. If you believe that you can learn, you will learn.

Be patient. You do not have to understand everything all at once. It is natural to make mistakes when

you learn something new. We can learn from our mistakes. In other words, do not worry about taking

risks.

   The second step is to practice your English. For example, write a diary every day. You will get used

to writing it in English, and you will feel comfortable expressing your ideas in English. Several weeks later, you will see that your writing is improving. In addition, you must speak English every day. You can

practice with your classmates outside class. You will all make mistakes, but gradually you will become

comfortable communicating in English.

   The third step is to keep a record of your language learning. You can write this in your journal. After

each class, think about what you did. Did you answer a question correctly? Did you understand

something the teacher explained? Perhaps the lesson was difficult, but you tried to understand it.

   You must be positive about learning English and believe that you can do it. It is important to practice

every day and make a record of your achievements. You will enjoy learning English, and you will feel

more confident in yourself.

1. To feel positive about learning English means _______.

A. if you are patient, you will learn    

B. you can understand everything all at once

C. if you make mistakes, you can learn from your mistakes

D.if you believe you can learn, you will learn

2. When you learn English, you do not need to ______.

A. be patient                        

B. make mistakes  

C. express your ideas in English      

D. understand everything all at once

3. What is not helpful for you to enjoy learning English?

A. To communicate in English.  

B. To worry about taking risks.

C. To think about what has been done after each class.  

D. To make a record of the achievements.

4. What is the main idea of this passage?

A. It is very important to learn a second language.

B. Some people learn a second language easily while other people do not.

C. There are ways to help you learn a second language more easily.

D. Don't worry about taking risks when learning a second language.

5. What does the underlined word "journal" in the 4th paragraph mean? 

A. Diary          

B. Composition        

C. Poem        

D. Newspaper