已知球的直径sc等于4

与1接近的实数的全体为什么不是集合? limit in 和limit to有什么区别有道完型填空:She has limited herself__ three children - one below the national average of four.我选了in,答案给的to.请达人指点. 关于集合的Z={全体整数} 为什么是错误的书上不是注解 全体整数的集合叫做整数集 C语言中*line与line有什么区别 Can she beat WangNan in the---（finally）match适当形式填空 养鸡场养鸡2200只,公鸡只数的四分之三等于母鸡只数的四分之一,公鸡,母鸡只数各多少只? 三角形ABC是等边三角形,边长是6,P从A出发到B,Q从B出发到C,P每秒一厘米,Q每秒两厘米,当Q到达C时,PQ都停止运动.设三角形BPQ的面积是S,求St的函数关系.作QR平行AB,当t为何值时,三角形APR相似三角形P 已知△ABC是边长为6厘米的等边三角形,动点P,Q同时从A,B两点出发已知△ABC是边长为6㎝的等边三角形,动点P,Q同时从A,B两点出发,分别沿AB,BC匀速直线运动,其中点P运动的速度是1厘米每秒,点Q运动 三角形ABC是边长为3厘米的等边三角形,动点P,Q同时从A,B两点出发,他们的速度都是1厘米每秒,当点P到达点B时,P,Q两点停止运动,设点P运动时间为t（1）当t为何值时,三角形PBQ为直角三角形（2）在 三角形abc是边长3厘米的等边三角形,动点P,Q同时从三角形ABC是边长为3厘米的等边三角形,动点P,Q同时从A,B两点出发分别沿AB,BC,方向匀速移动,它们的速度都是1厘米每秒,当点P到达点B时.P,Q两点停 ______ Miss Wang can remember,she hasn’t met the girl before.A.As well as B.As long as______ Miss Wang can remember,she hasn’t met the girl before.　　　A.As well as B.As long as C.As good as D.As far as 翻译：I bought this second-hand car dirt cheap.并问：dirt cheap 在句子中的成分. Recently I bought a secondhand car,________ was very low．A.which price B.the price of whose C.its price D.whose price Recently I bought a Chinese vase,________ was very reasonable.A)which price B)the price of which C)its price D)the price of whose 这道题A怎么不对```缺成分用关系代词````1。was very reasonable缺成分（主语）用WHICH不行？ 我要办一个关于高尚的手抄报,咋起题目?要快呀!拜托各位啦!(*^__^*) 根据句意,填入恰当的代词完成句子This is a ruler.__________ is a red ruler.That is her mother.__________ is a teacher.That boy is dale.________ is my friend--Is Mr Black __________ father?--Yes,I'm ______________ daughterI have many frie Recently I bough an ancient Chinese vase,__ was very reasonable. A:which pric B:its price...Recently I bough an ancient Chinese vase,__ was very reasonable. A:which pric B:its price C:the price of which D:the price of whose 选什么,求解释,谢 一般而言,纱线越细,织物保暖性越好吗我知道还有其他因素影响保暖性,若就只细度而言,纱线是越粗保暖性越好,还是越细保暖性越好呢? 织物中纱线的投影面积与织物的全部面积之比称为织物的什么? 假定相同的织物纱线每英寸,哪些编织会产生最稳定的织物纱线? 这几个是什么字啊,是印章上的. Jim bought a big house for is parents first after he became（）A rich B young C wet D funny he ——（own ）a big house. 纱线染色是用的什么染色剂,还是染色粉? 活性染色在对纱线染色上来说会起到什么作用? He owns a big house.(同义句） 饲养场养鸡8400只,公鸡是母鸡的5%,饲养场的公鸡和母鸡各多少只? Rencently i bought an ancient Chinese vase,__was very reasonable.答案是the price of which为什么不能是which price 请问上边一个斌下边一个贝是什么字?谢谢啊 养鸡场养的母鸡比公鸡多270只,母鸡与公鸡的比是4:1.求母鸡,公鸡各有多少只? 把人比喻动物 四年级中的所有比喻句快,我急