题目

单摆是为研究振动而抽象出的理想化模型，其理想化条件是 ( ) A . 摆线质量不计 B . 摆线长度不可伸缩 C . 摆球的直径比摆线的长度小得多 D . 只要是单摆的运动就一定是简谐运动 答案：A,B,C" To seek(追求) happiness is to look for it" was once said by the famous French author Jules Renard. Look for it? Sure…but don't spend a lifetime trying, especially if it's well within your reach but you're just too blind to see it. Discover the three keys to happiness that you have already understood, but that you are just too afraid to find it.1. Accepting YourselfThe idea of happiness is difficult to understand if you are not at peace with yourself. Learn to accept yourself as you are. Your next step will be to improve your attitude for tomorrow, for the next day, for the day after that, and so forth.By beginning to accept reality, you will come to the final point of true happiness. Only when you are at peace with yourself, will you finally be able to admit(承认) that you are, in fact, a happy person.2. Forgiving OthersForgiving others is a true show of humanity(入性) which also allows us to feel more at ease. When you learn to forgive, you also learn to keep a firm hold on your life. To forgive is to open the doors of personal satisfaction. Yet you simply open your mind to answer, " Do I really want to allow my anger to grow and eat me from inside out?"3. Helping Your NeighborsWhen a friend seems to be suffering from a state of depression(沮丧) , it's quite easy to help him or her out of the trouble. The best attitude to have in this situation is to make him or her understand that he or she is not alone.If you come to save a friend in need, you'll feel a lot more at peace with yourself. You will feel high—spirited by knowing that someone is looking at life on the brighter side thanks to your kind words.根据材料内容选择最佳答案，并将其标号填人题前括号内。1.What’s the wriyer’s purpose in mentioning what Jules Renard said?A.To please the readers.B.To encourage the readers.C.To lead in the topic of the passage.D.To support the topic of the passage.2.The best title for the passage is “ ”A.Acceping Yourself B.Forgiving Others.C.Helping Your Neighbors D.Keys to Happiness3.We are advised toA.change our lifestyle B.appreciate ourselvesC.make more friliends D.learn from others4.According to the passage, a happy person is most probablyA.a kind helper B.a big dreamerC.an good learner D.a rich giver5.Who most probably feels happy?A.Mrs. Brown,dreaming of having a better—paid job.B.Mrs. Black, loving his teaching job deeply.C.Mrs. Rowling, being unwilling to face failure.D.Mrs. Lee, refusing his best friend’s apology.