热敏陶瓷按R—T特性可分为？

2011年5月1日起国家禁止使用面粉增白剂，过氧化苯甲酰（化学式为C₁₄H₁₀O₄）这种使用多年的面粉增白剂正式退出人们的餐桌．下列关于过氧化苯甲酰的说法正确的是（　　）

A．属于无机化合物

B．碳元素、氢元素、氧元素的质量比为7：5：2

C．相对分子质量为242g

D．1个过氧化苯甲酰分子中共含有28个原子

He has devoted most of his time and energy _______ a cure for the disease.

A．find

B．finding

C．to find

D．to finding

A common assumption about the private sector of education is that it caters only to the elite. (31) recent research points in the opposite direction. If we want to help some of most (32) group in society, then encouraging deeper private sector (33) is likely to be the best way forward.
Several developments are (34) in India, all of which involve the private education sector meeting the (35) of the poor in distinct ways. (36) India is not unique in this respect—similar phenomena are happening all over the developing world.
As a point of departure, how do government schools serve the poor Usefully, the government sponsored Public Report on Basic Education in India from 1999 paints a very (37) picture of the" (38) "of the government schools for the poor. When researchers (39) unannounced on their random sample of the schools, only 53% had any "teaching activity" going on. (40) , the team not- ed that the (41) of teaching standards has nothing to do (42) disempowered teachers, but instead could be (43) "plain negligence". They noted "several cases of irresponsible teachers (44) a school closed for months at a time".
But is there any (45) to these schools Sorely no one else can do better than government (46) the resources available As it happens, the Report pointed to private schools that were serving the poor and (47) that such problems were not found in these schools. Most parents believed that private schools were successful because they were more accountable: "the teachers are account- able to the manager who can fire them, and, (48) him or her, to the (49) who can withdraw their children." Such accountability was not present in the government schools, and "this contrast is (50) with crystal clarity by vast majority of parents.\

A．desolate

B．bleak

C．ingenious

D．delicate

以下属于湖南名点的是（）

A.虾饼

B.韭菜盒

C.片儿川

D.鸽蛋圆子

在下列有关网络计划的叙述中，正确的提法是( )。

A．在时标网络计划中，除有实箭线外，还可有虚箭线和波形线

B．在单、双代号网络计划中，一般存在实箭线和虚箭线两种箭线

C．在单、双代号网络计划中均有虚工作

D．在单代号搭接网络计划中，计算工期可能由中间节点或结束节点的最早完成时间决定。

E．在双代号网络计划中，在关键线路上一般没有虚箭线