一件商品的原价是160元,现价是120元,它是按原价的______折出售.

题型:填空题

问题:

一件商品的原价是160元,现价是120元,它是按原价的______折出售.

考点:百分数的计算,百分数的应用题
题型:填空题
过点(1,
2
)
的直线l将圆(x-2)2+y2=4分成两段弧,当劣弧所对的圆心角最小时,直线l的斜率k=______.
题型:填空题

Many people think sports are just for winning and honor, but there is a lot more you can gain from (get out of) them. I have learned over the past years that sometimes when I lose, I get a lot more out of it than winning. Also, I find a lot of times in sports, people are getting too caught up in the game instead of just having fun. The real purpose of sports is to have fun and learn life lessons along the way.

I greatly encourage you to be a part of the school sports. Even if you are not the best, you can still have fun. Sports give people a great and healthy way of spending an afternoon, instead of lying around playing video games or even getting into bad things. Sports also give us a sense of achievement. There isn’t a better feeling than to have done something fun and productive for my day.

I think that we all need sports to give us courage. If we try hard in sports, we usually do well. If we did the same in study, we would all be champions. Another reason why I encourage you to play sports is that it’s just fun. Without sports, our lives would just be boring. So as you may be able to tell, sports are amazing!

Our coaches not only teach us to play sports, but show class and good sportsmanship while playing them. It’s never fun when you lose to have the competitor rub it in your face. That’s why our coaches teach us to show class when we lose; also, when coaches get onto you, don’t get down. They only want to see you improve and learn from what they say. When you do badly and they don’t shout loudly is when you should start worrying because they are giving up on you.

Overall, sports are great! They bring out the best and worst of a lot of us. However, we can’ t let sports get too serious to where it brings down all the fun. So to have the most fun in sports, you just need try your best and not worry so much about the winning or losing.

小题1:The underlined phrase “get onto you” in Paragraph 4 probably means ________.

A.point out your mistakes

B.take up your time

C.worry about your future

D.look into your privacy小题2:Which of the following statements is TRUE according to the passage?

A.Sports bring us great fun only if we have the talent.

B.Sports give us the best way of spending free time.

C.We can get more out of winning than losing.

D.We should take pleasure in doing sports.小题3:What is the best title of this passage?

A.Are we too caught up?

B.To win or to gain?

C.Are sports really great?

D.For honor or for health?

题型:填空题

甲、乙、丙三人环湖跑步锻炼,同时从湖边一固定点出发,乙、丙二人同向,甲与乙丙反向,在甲第一次遇上乙后1.25分钟第一次遇上丙,再经过3.75分钟第二次遇乙.已知甲速遇乙速的比是3:2,湖的周长是2000米.求甲、乙、丙三人的速度每分钟各是多少米?

题型:填空题

背景材料:

为适应21世纪科学技术和社会发展的需要,要求教师必须转变角色,由知识的传授者向教育实践的研究者转变。普通高中化学课程标准实验教科书中提出,为化学教师创造性的教学和研究提供更多的机会,在课程改革的实践中引导教师不断反思,促进教师的专业化发展。

问题:

(1)化学研究中较为常见的方法有哪些

(2)谈谈化学教学研究的意义。

题型:填空题

如图所示为梁在实际状态下的弯矩图MP图。EI=常数,则D点的竖向位移∆DY=()。

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