问题 不定项选择
不定项选择

一个质点在平衡位置O点附近做简谐运动,如图所示,若从O点开始计时,经过3s质点第一次经过M点,再继续运动,又经过2s它第二次经过M点,则该质点第三次经过M点还需时间是(  )

A.8 s

B.4 s

C.14 s

D.s

答案

CD

阅读理解
Some people learn a second language easily. Other people 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 easier and more interesting.
The first step is to feel confident about learning English. If you believe that you can learn well, you will learn well. Be patient. You don’t 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, keep a diary or make notes every day. You will be used to writing in English, and you will feel comfortable expressing your ideas in English After several weeks, 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 diary. 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. Write these achievements in your diary.
You must have confidence about learning English and believe that you can do it. It’s important to practice every day and make a record of your achievements. You will enjoy learning English, and you will have more confidence in yourself.
Main idea: How to be a successful English 46________?
Step 1
Feel confident about English
47________ in yourself and you will make it.
Don’t be 48________ of making mistakes.
Step 2
49________ your English
To 50______ your writing, form a good 51________ of keeping a diary or making notes.
To communicate well in English, speak English as much as 52__________
Step 3
53________ your language.
Think about your 54________ in the English class
Write your achievements in you diary.
Conclusion: Confidence, belief and practice are equally 55_________ in English learning.
完形填空

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。该项中有两项为多余选项。

My mother is a diligent and kind woman. She is very busy from morning till night. As a teacher, she works hard.  ___小题1:___ Both my brother and I love her dearly as she loves us.

My mother has been teaching math at a middle school in my hometown. She goes to work early in the morning and does not return home until late in the afternoon. ___小题2:___She treats them with patience and teaches them well. For her excellent quality and very good teaching results, she has been elected as a model teacher several times.

___小题3:___ Every day, when she comes back home from work, she sets about doing housework, sweeping the living room and bedrooms or cleaning the furniture, and putting everything in good order. She seems to be busy all the time. As she has been very busy working every day, she looks older than her age. But she looks as cheerful and happy as ever. Mother never buys expensive dresses for herself, but she often buys some inexpensive but high quality clothes for us. ___小题4:___ She just eats a plain meal outside when she is too busy to cook herself. She lives a busy yet simple life, without any complaints.

Often she says to us, “Work while you work, and play while you play. That is the way to be happy and gay. If you do not work, you will become lazy and be of no use to society”. What a piece of good advice this is! ___小题5:___ This advice of hers will always serve as a guide to my behavior. My mother is great indeed, and I always feel proud of her.

A. As a mother, she takes good care of us and gives us every comfort.

B. She enjoys listening to classic music.

C Can you tell us something about your mother?

D. She loves her students and cares for them.

E. She never goes to expensive restaurants to enjoy meals.

F. My mother is hard-working and never wastes money.

G. I never forget it and always bear it in my mind.