学进去-教育应平等而普惠
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限于篇幅仅展示1000道试题,请根据关键词精准搜索
已知函数,若,则的单减区间是______;若的值域是,则实数的取值范围是______.
类型:双空题
难度系数:困难0.15
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已知函数,若函数恰有两个零点,则a的取值范围是______
类型:填空题
难度系数:困难0.15
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如图所示,底部带有挡板的固定斜面,倾角为,上有质量为2m的长木板A,其下端距挡板间的距离为L,质量为m的小物块B置于木板A的顶端,B与木板A之间的动摩擦因数为木板A与斜面间的动摩擦因数为无初速度释放二者,当木板滑到斜面底端时,与底部的挡板发生弹性碰撞,且碰撞时间极短。小物块B全程没有脱离木板A且没有与挡板接触,可认为最大静摩擦力等于滑动摩擦力,重力加速度为g,求:(结果的数值部分保留至小数点后两位,也可用分数表示)
(1)木板A与小物块B运动过程中各阶段加速度大小;
(2)从释放到A与挡板发生第二次碰撞前A与斜面摩擦产生的热量;
(3)木板A长度的最小值。
类型:解答题
难度系数:困难0.15
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如表是1912年中华民国南京临时政府部分组成人员及其政治属性。据此可推知(     
职务姓名政治属性
外交总长王宠忠革命派
内务总长程德全旧官僚
财政总长陈锦涛旧官僚
陆军总长黄兴革命派
司法总长伍廷芳旧官僚
教育总长蔡元培革命派
实业总长张謇立宪派
交通总长汤寿潜立宪派
A.辛亥革命潜伏着失败的因素B.袁世凯窃取了辛亥革命果实
C.资产阶级各派别达成了妥协D.民主共和观念逐渐深入人心
类型:单选题
难度系数:困难0.15
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某地质考察队对重庆某地进行考察,测得其东西向且相邻很近的甲、乙、丙三地的气温和同一岩层的埋藏深度。该区域山谷风显著。据此完成下面小题。



1.图中所测地区的地形是(     
A.背斜山B.向斜山C.背斜谷D.向斜谷
2.图示地区夜晚风向和地貌形成的地质作用主要是(     
A.乙→甲   流水沉积B.甲→乙   流水侵蚀C.甲→乙   流水沉积D.乙→甲   流水侵蚀
类型:选择题组
难度系数:困难0.15
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向含a mol NaClO的溶液通入b mol SO2充分反应(不考虑二氧化硫与水之间的反应以及次氯酸的分解)。下列说法不正确的是
A.当0<b< 时:SO2+H2O+3ClO-= +2HClO+Cl-
B.当b=a时:SO2+H2O+ClO-=+2H++Cl-
C.当 <b<a时;反应后溶液中H+的物质的量:0<n(H+)<2bmol
D.当0<b<a时;反应后溶液中Cl-、ClO-物质的量之比为:(a-b):b:b
类型:单选题
难度系数:困难0.15
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Welcome to my Message Board!
Subject: Slimming down classics?

Mr.Handsome
2007-5-12
6: 34 AM

Orion Books, which decides there is a market in creating cut-down classics (经典著作), is slimming down some novels by such great writers as L. Tolstoy, M. Mitchell and C. Bronte. Now, each of them has been whittled down to about 400 pages by cutting 30 to 40 pages percent of original, with words, sentences, paragraphs and, in a few cases, chapters removed. The first six shortened editions, all priced at £6.99 and advertised as great reads “in half the time”, will go on sale next month, with plans for 50 to 100 more to follow. The publishing house believes that modern readers will welcome the shorter versions.


Mr.Edwards
2007-5-12
9: 40 AM

Well, I’m publisher of Orion Group. Thanks for your attention, Mr. Handsome.

I must say, the idea developed from a game of “shame” in my office. Each of us was required to confess (承认) to the most embarrassing blanks in his or her reading. I admitted that I had never read Anna Karenina and tried but failed to get through Gone with the Wind several times. One of my colleagues acknowledged skipping (跳读) Jane Eyre. We realized that life is too short to read all the books you want to and we never were going to read these ones.

As a leading publishing house, we are trying to make classics convenient for readers but it’s not as if we’re withdrawing the original versions. They are still there if you want to read them.

Ms. Weir
2007-5-12
11:35 AM

I’m director of the online book club.

Mr. Edwards, I think your shortened edition is a breath of fresh air. I’m guilty of never having read Anna Karenina, because it’s just so long. I’d much rather read two 300-page books than one 600-page book. I am looking forward to more shortened classics!

Mr.Crockatt
2007-5-12
4:38 PM

I’m from the London independent bookshop Corckatt & Powell.

In my opinion, the practice is completely ridiculous. How can you edit the classics? I’m afraid reading some of these books is hard work, and that is why you have to develop as a reader. If people don’t have time to read Anna Karenina, then fine. But don’t read a shortened version and kid yourself it’s the real thing.

1.According to the message board, Orion Books ________.
A.opposes the reading of original classics
B.is embarrassed for cutting down classics
C.thinks cut-down classics have a bright future
D.is cautions in its decision to cut down classics
2.In Mr. Edwards’ opinion, Orion Group is shortening classics to________.
A.make them easier to readB.meet a large demand in the market
C.increase the sales of literary booksD.compete with their original versions
3.Mr. Crockatt seems to imply that________.
A.reading the classic works is a confusing attempt
B.shortening the classics does harm to the original
C.publishing the cut-down classics is a difficult job
D.editing the classic works satisfies children’s needs
类型:阅读选择
难度系数:困难0.15
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假如你是校学生会主席李华,你校将举行一年一度的校园科技创新大赛,请你写一则英文通知,内容包括:
1. 参赛规则和要求;
2. 鼓励大家踊跃参与。
注意:
1. 词数80左右;
2. 请按如下格式在答题卡的相应位置作答。
参考词汇:科技创新大赛Technological Innovation Contest

Notice


___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
类型:告知信/通知
难度系数:困难0.15
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假定你是李华,你收到你的朋友Chris的来信。信中他提到因自己没有表现好而导致班级输了篮球赛,他感到非常沮丧。请给他写一封回信,内容包括:
1.表示理解并给予安慰;
2.提出建议并说明理由。
注意:
1.词数120左右;
2.可以适当增加细节,以使行文连贯;
3.开头和结尾已经给出,不计入总词数。
Dear Chris,
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

类型:建议信
难度系数:困难0.15
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假定你是李华,你校艺术中心将举办“我家的花卉”摄影展,请你给外籍教师Mr. Smith写封邮件,邀请他参观,内容包括:
1. 展览时间、地点;
2. 展览内容。
注意:1. 写作词数应为80个左右;
2. 请按如下格式在答题卡的相应位置作答。
Dear Mr. Smith,
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

类型:邀请信
难度系数:困难0.15
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