热点试题

[ 数学 ] 是定义在上的非负可导函数,且满足,对任意的正数,若,则必有                

是定义在上的非负可导函数,且满足,对任意的正数,若,则必有                                (   )
A.B.
C.D.

2016-05-23 | 0

[ 数学 ] 如图,三点在地面同一直线上,,从两点测得点仰角分别是,则点离地面的高度等于        

如图,三点在地面同一直线上,,从两点测得点仰角分别是,则点离地面的高度等于           (    )
A.B.
C.D.

2016-05-23 | 0

[ 数学 ] 中,角、、成等差,边、、成等比,则一定是( )A.等边三角形B.等腰三角形C.直角三角形D

中,角成等差,边成等比,则一定是(  )
A.等边三角形B.等腰三角形C.直角三角形D.等腰直角三角形

2016-05-23 | 0

[ 数学 ] 已知△ABC中,a,b,c分别是角A,B,C的对边,a=,b=,B=60°,那么∠A等于

已知△ABC中,a,b,c分别是角A,B,C的对边,a=,b=,B=60°,那么∠A等于[    ]
A.135°
B.45°
C.135°或45°
D.60°

2016-05-23 | 0

[ 语文 ] 下列各句中没有错别字且注音全对的一组是(   )                 A.北京

下列各句中没有错别字且注音全对的一组是(   )                 
A.北京东四奥林匹克社区公园已变成了欢乐的海洋,在飞舞的空竹里,在嗡嗡的旋律中,人们把对北京的热爱,把对2008年奥运会的期盼与憧(chōng)憬(jǐng)表达得淋漓尽致。
B.中午,记者终于到达“嫦娥一号”的观测点,迅(xùn)速(shù)架起像机,一刻不停地瞄准远处的“嫦娥一号”绕月卫星。
C.青藏铁路的海拔是世界上最高的,它攀爬到海拔5072米的最高点,横(héng)亘(gèng)白雪覆盖的青藏高原,火车的轰鸣声响澈世界屋脊。
D.国学教育应从娃娃抓起。学龄前儿童记忆力好,将传统文化的精髓借助韵文,让孩子们在不知不觉的熏
(xūn)陶(tāo)中成长,这是一种新的尝试。但这种教育不能急攻近利,要符合当今社会的价值观。

2016-05-26 | 0

[ 语文 ] 下列词语中没有错别字的一组是A.装帧堙没冒然山麓风餐路宿 B.寻觅缴费气慨熔铸风生鹤唳C.

下列词语中没有错别字的一组是
A.装帧堙没冒然山麓风餐路宿
B.寻觅缴费气慨熔铸风生鹤唳
C.蔓延缘份宣泄咀嚼慢不经心
D.倾覆滥觞沿袭倏忽温文尔雅

2016-05-26 | 0

[ 语文 ] 阅读下面三句话,按要求回答问题。(4分)①柏拉图说:“征服自己需要更大的勇气,其胜利也是所

阅读下面三句话,按要求回答问题。(4分)
①柏拉图说:“征服自己需要更大的勇气,其胜利也是所有胜利中最光荣的胜利。”
②卢梭则谈到:“人要是惧怕痛苦,惧怕种种疾病,惧怕不测的事件,惧怕生命的危险死亡,他就会什么也不能忍受的。”
③鲁迅说过:“伟大的心胸,应该表现出这样的气概——用笑脸来迎接悲惨的厄运,用百倍的勇气来应付一切的不幸。”
上面三句话,既有共同点,又各有差异。请分别同答。
小题1:三句话谈论的共同点是                                                           
小题2:柏拉图侧重的是                                                                 
卢梭侧重的是                                                                    
鲁迅侧重的是

2016-05-27 | 0

[ 英语 ] Consumers are being confused and misled by th


Consumers are being confused and misled by the hodge-podge (大杂烩) of environmental claims made by household products, according to a “green labeling” study published by Consumers International Friday.
Among the report’s more outrageous (令人无法容忍的) findings, a German fertilizer described itself as “earthworm friendly”, a brand of flour said it was “non-polluting” and a British toilet paper claimed to be “environmentally friendlier”.
The study was written and researched by Britain’s National Consumer Council (NCC) for lobby group Consumer International.It was funded by the German and Dutch governments and the European Commission.
“While many good and useful claims are being made, it is clear there is a long way to go in ensuring shoppers are adequately informed about the environmental impact of products they buy,” said Consumers International director Anna Fielder.
The 10-country study surveyed product packaging in Britain.Western Europe, Scandinavia and the United States.It found that products sold in Germany and the United Kingdom made the most environmental claims on average.
The report focused on claims made by specific products, such as detergent (洗涤剂), insect sprays and by some garden products.It did not test the claims, but compared them to labeling guidelines set by the International Standards Organization (ISO) in September, 1999.
Researchers documented claims of environmental friendliness made by about 2,000 products and found many too unclear or too misleading to meet ISO standards.
“Many products had specially-designed labels to make them seem environmentally friendly, but in fact many of these symbols mean nothing,”said report researcher Philip Page.
“Laundry detergents made the most number of claims with 158.Household cleaners were second with 145 separate claims, while paints were third on our list with 73.The high numbers show how confusing it must be for consumers to sort the true from the misleading.” he said.
The ISO labeling standards ban vague or misleading claims on product packaging, because terms such as “environmentally friendly” and “non-polluting” cannot be tested.“What we are now pushing for is to have multinational corporations meet the standards set by the ISO.” said Page.
1.According to the passage, the NCC found it outrageous that ____.
A.all the products surveyed claim to meet ISO standards
B.the claims made by products are often unclear or misleading
C.consumers would believe many of the manufactures’claim
D.few products actually prove to be environmentally friendly
2.A study was carried out by Britain’s NCC to ____.
A.find out how many claims made by products fail to meet environmental standards
B.inform the consumers of the environmental impact of the products they buy
C.examine claims made by products against ISO standards
D.test the guidelines set by the International Standards Organization
3.What is one of the consequences caused by the many claims of household products?
A.They are likely to lead to serious environmental problems
B.Consumers find it difficult to tell the true from the false
C.They could arouse widespread anger among consumer
D.Consumers will tend to buy products they don’t need
4.It can be inferred from the passage that the lobby group Consumer International wants to ____.
A.make product labeling satisfy ISO requirements
B.see all household products meet environmental standards
C.warn consumers of the danger of so-called green products
D.prove the efforts of non-polluting products

2016-05-29 | 0

[ 英语 ] 汉译英。 ①原始习俗___________________________________

汉译英。
①原始习俗_______________________________________________________________
②一个简陋的棚子___________________________________________________________
③单纯的想法_______________________________________________________________
④原始工具_________________________________________________________________

2016-05-29 | 0

[ 物理 ] 下列实例中,属于内能转化为机械能的是 (     )A.煤炭的燃烧B.锯铁管时锯条发热C.

下列实例中,属于内能转化为机械能的是 (     )
A.煤炭的燃烧B.锯铁管时锯条发热
C.放烟火时,礼花腾空而起D.植物进行的光合作用

2016-05-30 | 0