A young man was traveling. It was getting late in the day, and he was t. When he met an old man on the road, he asked him, “Excuse me, where can I get w, sir?”
The old man told him, “Walk along the road and you’ll see a small r.” Then the old man added, “If you pick up some pebbles(卵石;小圆石) from the river bed, you will get both glad and s.”
The young man t the old man and went on his way. When it got dark, he found the river and took a d. He thought it was silly to pick up pebbles, b he still picked some up. He then found a p to sleep.
The next morning the young man found those pebbles became beautiful, bright jewels (珠宝)。So he ran back to the river q to get more, but there were only sands.
Looking at the beautiful jewels, he felt s that he hadn't picked up more. At that time he was happy that he had picked some up.

如图所示,电源电压为6V,闭合开关s后,发现两灯均不亮,仔细检查发现灯泡L2的灯丝断了,其它部分均正常。这时若用电压表测a、b两点间的电压,示数为V,测b、c两点间的电压,示数为 V。

曲:qǔ qū
藏:cáng zàng
乐:lè yuè
且与直线
相切的圆的方程为.
材料一 丞相李斯说:“非秦记皆烧之;非博士官所职,天下敢有藏《诗》《书》、百家语者,皆诣守尉杂烧之。”……公元前212年,因为有儒生方士说秦始皇“天性刚愎自用,贪于权势”等,秦始皇大怒,命御史追查,结果以诽谤罪将460人在咸阳坑杀。
材料二 臣愚以为诸不在六艺之科、孔子之术者,皆绝其道,勿使并进。邪僻之说灭息,然后统纪可一而法度可明,民知所从矣。
——《汉书·董仲舒传》
材料三 孔子和儒家思想是“数千年前之残骸枯骨”“历代帝王专制之护符”“保护君主政治之偶像”。……对于不合时宜的旧道德,“虽冒毁圣非法之名,亦所不恤矣”。
——李大钊
请回答:

you any books about India?
已知抛物线y=ax2-4ax+c经过点A(0,2),顶点B的纵坐标为3.将直线AB向下平移,与x轴、y轴分别交于点C、D,与抛物线的一个交点为P,若D是线段CP的中点,则点P的坐标为 .
算筹记数的表示方法为:个位用纵式,十位用横式,百位用纵式,千位再用横式……以此类推,来表示任何自然数,遇零用空位表示.如:
根据上面的信息,268用算筹记数的方法表示为.
董存瑞舍身炸暗堡
1948年5月25日,我军攻打隆化城的战斗打响。董存瑞所在连队担负攻击国民党守军防御重点隆化中学的任务。他担任爆破组组长,带领战友接连炸毁4座炮楼、5座碉堡,胜利完成了规定的任务。连队随即发起冲锋,突然遭到敌人隐蔽的桥形暗堡猛烈火力的封锁。部队受阻于开阔地带,二班、四班接连两次对暗堡爆破均未成功。
在这万分危急的时刻,董存瑞挺身而出,向连长请战:“我是员,请准许我去!”说完,毅然抱起炸药包,冲向暗堡。在前进的过程中,他左腿负伤,但仍然顽强坚持冲至桥下。然而桥形暗堡距地面超过身高,两头桥台又无法放置炸药包。
总攻时间到了,冲锋号又一次响起。危急时刻,董存瑞毫不犹豫地用左手托起炸药包,右手拉燃导火索,高喊:“为了新中国,前进!”碉堡被炸毁,董存瑞以自己的生命为部队开辟了前进的道路,牺牲时年仅19岁。
(选自《光明日报》,有删改)
aunt?
,则
.