皮皮学,免费搜题
登录
搜题
【简答题】
Old people are always saying that the young people are not【61】they were. The same comment is【62】from generation to generation and it is always【63】. It has never been truer than it is today. The young are better educated. They have a lot more money to spend and enjoy【64】freedom. They grow up more quickly and are not so【65】on their parents. Events which the older generation remember vividly are【66】more than past history. This is as it should be. Every new generation is【67】from the one that preceded it. Today the difference is very marked indeed. The old always assume that they know best for the simple【68】that they have been【69】a bit longer. They don't like to feel that their values are being questioned or threatened. And this is precisely what the【70】are doing. They are questioning the 【71】 of their eiders and disturbing their complacency. They take leave to 【72】 that the older generation has created the best of all possible words. What they reject more than 【73】 is conformity. Office, hours, for instance, are nothing more than enforced slavery. Wouldn't people work best if they were given complete freedom and 【74】 ? And what 【75】 the clothing? Who said that all the men in the world should 【76】 drab grey suits? If we turn our 【77】 to more serious matters, who said that human differences can best be solved through conventional politics or by violent means? Why have the older generation so often used 【78】 to solve their problems? Why are they are so unhappy and guilt-ridden in their personal lives, so obsessed with mean ambitions and the desire to amass more and more 【79】 possessions? Can anything be right with the rat-race? Haven't the old lost 【80】 with all that is important in life? (56)
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【简答题】设f(x)为二次函数,且f(1)=1,f(x+1)﹣f(x)=1﹣4x. (1)求f(x)的解析式; (2)设g(x)=f(x)﹣x﹣a,若函数g(x)在实数R上没有零点,求a的取值范围.
【简答题】设f(x)在(-∞,+∞)内可导,且F(x)=f(x 2 -1)+f(1-x 2 ),证明F'(1)=F'(-1).
【简答题】设f(x)在x=1处连续,且f(1)=0, lim x→1 f(x) x-1 =2,求f′(1).
【简答题】(1)设f(x)=x(x-1)(x-2)…(x-2006),求f'(0) (2)设f(x)=(2 x -1)ψ(x),其中ψ(x)在x=0处连续,求f'(0)
【单选题】已知 0.5 L 的 NaCl 溶液中含有 0.5 mol Na + 。下列关于该溶液的说法不正确的是 ( )
A.
该溶液中溶质的物质的量浓度为 1 mol·L - 1
B.
该溶液中含有 58.5 g NaCl
C.
配制 100 mL 该溶液需用 5.85 g NaCl
D.
量取 100 mL 该溶液倒入烧杯中,烧杯中 Na + 的物质的量为 0.1 mol
【单选题】在0.5 L某浓度的NaCl溶液中含有0.5 mol Na + ,下列对该溶液的说法中不正确的是(  ) A.该溶液的物质的量浓度为1 mol·L -1 B.该溶液中含有58.5 g NaCl C.配制100 mL该溶液需用5.85 g NaCl D.量取100 mL该溶液倒入烧杯中,烧杯中Na + 的物质的量为0.1 mol
A.
该溶液的物质的量浓度为1 mol·L-1
B.
该溶液中含有58.5 g NaCl
C.
配制100 mL该溶液需用5.85 g NaCl
D.
量取100 mL该溶液倒入烧杯中,烧杯中Na+的物质的量为0.1 mol
【简答题】5mol Na + 的质量是 ______g
【单选题】若N A 表示阿佛加德罗常数,下列说法正确的是
A.
N A 个二氧化碳分子和0.5 mol甲烷的质量比为l l : 4
B.
1 mol Cl 2 作为氧化剂得到的电子数为N A
C.
在0℃,101kPa时,11.2 L氢气中含有0.5N A 个氢原子
D.
16 g甲烷分子中含有共价键数目共为4N A
【单选题】将0.5  mol Na投入过量的水(m 1 g)中,得到a g溶液;将0.5 moL Mg投入过量的盐酸(m 2 g)中,得到b g溶液,若m 1 =m 2 ,则a、b的质量关系是
A.
a>b
B.
a<b
C.
a=b
D.
不能确定
【单选题】下列各溶液中,Na + 的物质的量浓度最大的是(  )
A.
4L 0.5mol/L NaCl溶液
B.
1L 0.5mol/L Na 2 SO 4 溶液
C.
5L 0.4mol/L NaOH
D.
2L 0.1mol/L Na 3 PO 4
相关题目: