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The first time I decided to leave home was when 1 was in high schoo1.1 was having trouble getting along will my parents.I had about a hundred dollars in my pocket,and so I thought about leaving home, It took me 6my three weeks away from home when I stared to feel homesick. Living on my own is a totally different experience for three main reasons:being more responsible, more decisive and more creative First of all,I have learned that living on my own requires that I become more responsible.My parents usually tell me to carry out m y work and duties almost every day.men I fail to do the work,I only get scolded. However now that I am on my own,I get to deal with my duties without being told to.When I fail to do my duties,I must also deal with the result by myself Another different experience for me while living on my own is that now I have become more decisive. ·I have to be more careful since I am on my own because my parents are not here to give me their advice. I must make my own decisions.For example,I must make the best decisions for myself without hurting anybody’s feelings and without my parents,guidance. Therefore,I became more creative just by living on my own.I could make my own future plan-l have made rules for myself to follow.This to me is a good experience,because I usually think that being creative is the.nicest thing in the world.However, when 1 was with my parents l found it hard for me to be creative simply because I always followed their ideas. In conclusion,these are the things that usually happen when I am with my parents and when I am alone. Besides,I think that it is better for everyone to love their parents and themselyes before they love anyone else.They s hould leam how to live on their own. but meanwhile learn how to follow every technique that was given to them by their Pa rents.They can make use of their freedom of choice to lead to wherever they want。 小题1:According to the text,the author decided to leave home because A.he would like to live in the school with fellows B.he found it hard to get on well with his parents C.he had to go on with.his studies in.another city D.he felt he was old enough to live on his own 小题2:What did the author think matters most in the world? A.Being independent. B.Being responsible. C.Being creative. D.Being more decisive. 小题3:The passage mainly tells us that . A.one Can be, free of trouble by living on one’s own B.one can enjoy more freedom by living on one,s own C.living alone can help one keep good relationships with parents D.1iving alone helps one become responsible,decisive and creative 小题4:How is the text developed? A.Explanation—Examples—Conclusion B.Explanation—Research—Conclusion C.Argument—Information—Conclusion D.Argument—Reasons—Conclusion
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【单选题】当我们谈及线应变时,必须明确( )的线应变。
A.
该应变是受力物体内哪一点
B.
该应变是受力物体内哪一点,哪一个方向
C.
该应变是受力物体内哪一个单元体
D.
该应变是受力物体内哪一个方向
【判断题】(    )轴向拉伸或压缩杆的轴向线应变和横向线应变符号一定是相反的。
A.
正确
B.
错误
【多选题】标注螺纹标记时,如符合下列情况,应省略有关标注内容:( )
A.
粗牙普通螺纹的螺距和管螺纹每英寸牙数不标注
B.
如中径和顶径公差带代号相同,只标注一次;
C.
右旋螺纹不注旋向,左旋螺纹必须另注字母“LH”;
D.
螺纹旋合长度为中型(代号为N)时不注,长型用L表示,短形用S表示。
【单选题】单位长度杆的变形称为()。
A.
平均线应变
B.
线应变
C.
单位应变
D.
任意应变
【判断题】线应变是构件中单位长度的变形量。(    )
A.
正确
B.
错误
【单选题】单位长度杆的变形称为()。
A.
平均线应变
B.
线应变
C.
单位线应变
D.
任意应变
【简答题】什么是应变?静止在深水中的铁块中的应变是线应变、体应变,还是切应变?边长为a的正方形物块,在切应力的作用下,受力面的边长变为b,怎样表示该物块的切应变?
【单选题】下面关于线应变,那个表述是正确的。
A.
线应变是沿着杆长度方向,单位长度的尺寸该变量。
B.
线应变是沿着杆长度方向,总的尺寸该变量。
【单选题】杆件单位长度的纵向变形为( )。
A.
横向线应变
B.
纵向线应变
C.
塑性应变
D.
弹性应变
【单选题】下列关于纵向线应变和横向线应变说法正确的是( )。
A.
杆件受拉时,纵向线应变为正,横向线应变为负
B.
杆件受拉时,纵向线应变为负,横向线应变为正
C.
杆件受拉时,纵向线应变和横向线应变均为正
D.
杆件受拉时,纵向线应变和横向线应变均为负
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