已知等差数列{an}的前n项和为Sn,且满足S33-S22=1,则数列{an}的

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问题:

已知等差数列{an}的前n项和为Sn,且满足
S3
3
-
S2
2
=1,则数列{an}的公差是(  )
A.
1
2
B.1C.2D.3
考点:等差数列的定义及性质
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以下是力学中的三个实验装置,由图可知这三个实验共同的物理思想方法是(   )

A.极限的思想方法

B.控制变量的方法

C.放大的思想方法

D.猜想的思想方法

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小明、小林和小颖共解出100道数学题,每人都解出了其中的60道,如果将其中只有1人解出的题叫做难题,2人解出的题叫做中档题,3人都解出的题叫做容易题,那么难题比容易题多______道.

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Thank you for trusting me. I enjoy exchanging my ideas with yours

The first thing I want to tell you is that if the boys are calling you names it is their fault, not yours. Boys, at your age, are different from girls. They are trying to prove that they are manly and then often do this by picking on someone who can’t really fight back. This is, of course, wrong but it happens. In general, the boys know they are bigger and stronger than you are, so they can make fun of you and make you cry and then laugh about it. If you let them see that they are hurting you, they will only do it more. It isn’t that they want to hurt you; they simply want to make themselves feel superior(优越的). It’s stupid, but it is common.

In English we say “ sticks and stones may break my bones but names will never hurt me.” Canadian children learn this from their mothers because the same thing that is happening to you in China also happens here. The best ways of getting the boys to stop calling your names is to simply ignore them, knowing that the names can’t hurt you and that the boys are being stupid. If you can laugh at them they will get tired of trying to make you cry and they’ll give up. It won’t be easy, but, trust me, it will work. There is also something else working in your favor and that is that you are growing up and the boys are beginning to notice you as a young woman. I suspect some of them actually like you and are making fun of you just to get your attention. Again, it’s stupid but it happens. In reality, you can control this situation by not letting them see you getting hurt. Laugh at them, tell them they’re acting like children and they should grow up and then walk away with your head held high.

One more thing, Nancy. It is very important that you stop hurting yourself. If someone else hurts you, it is bad enough but you should’t make it worse by then hurting yourself. Even sticking a pen into your finger can cause an infection and give you a lot of trouble and besides, it hurts. The next time you are disturbed by a group of stupid boys, write to me. You and I can talk about anything you like; about China, about Canada, about travel, anything. Having a conversation with me is better than sticking holes in your fingers, at least I hope it is.

小题1:It can be learned from the passage that the writer is        .

A.a Canadian

B.an Englishman

C.Nancy’s schoolmate

D.Nancy’s father小题2:Nancy hurt herself because she      .

A.couldn’t prevent the boys taking interest in her

B.felt it her own fault to be called names by boys

C.found herself more stupid than the boys

D.wanted the boys to see her hurt by herself小题3:We can learn that the boys call Nancy names mainly because they        .

A.want to prove manly

B.are bigger and stronger

C.mean to hurt Nancy

D.actually like Nancy小题4:The best way for Nancy to stop being called names is to        .

A.talk to the writer

B.cry and hurt herself

C.fight back and ignore them

D.stick holes in her fingers

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关于行政诉讼二审程序,下列不正确的说法有:( )

A.当事人不服一审判决,有权在判决书送达之日起15日内向上一级法院起诉,若对裁定不服,有权在裁定书送达之日起10日内向上一级法院起诉

B.法院对上诉案件,认为事实清楚的,可以实行书面审理,若当事人对原审法院认定的事实有争议,人民法院仍可实行书面审理

C.第二审人民法院审理上诉案件,应当对原审法院的裁判和被诉具体行政行为是否合法进行全面审查

D.一般情况下,法院审理上诉案件,应当在收到上诉状之日起2个月内作出终审判决

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探头频率f0,入射角度θ一定时,描述多普勒频移正确的是

A.多普勒频移与血流速度成正比关系
B.多普勒频移与血流速度成反比关系
C.多普勒频移与取样容积大小成正比
D.多普勒频移与取样容积大小成反比
E.多普勒频移与增益有关

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