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北京市政府采取的机动车尾号限行措施属于何种性质的行为?其合法性如何? 2015北京车尾号英文字母的怎么限号 21.Fred ran to the hospital all the way,arriving there ________of breath.A.without B.out C.under D.below32.How beautifully she sings!I have never heard _______________.A.the better voice B.a good voice C.the best voice D.a better voice33.After studyi After running .she is too tired to walk any____a.farther b.further c.farthest d furthestWe have setup a lot of highrises in our school_____a.since five years b.in the past five years c in five years d in 1999 紧急( ⊙ o ⊙ 1.Shall I open the window to let some fresh air in?No,_____.A.I would rather not B.I would rather you not C.I would rather you did not D.I would like not to可是为什么B不行呢?还有C里的did哪来的,没过去时啊,难道 it's six weeks__I met you last.a when b.since c.before d.for It is two weeks since we met last time 是什么从句? 离散数学自然映射什么意思? 离散数学中附加前提是什么意思,什么是附加前提. 已知f（x）=-x的平方+ax-a/4+1/2,x属于[0,1],求f(x)的最大值g(a) 为什么冰岛并不寒冷? 为什么冰岛并不寒冷?如题 为什麽说冰岛不冷?. 初中完型有一句话看不懂Unluckily,four times that many students were at the meeting. 0-5之间11个数字选三个数除以3哪个数概率最大0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 我们人类是怎样感受时间的存在的?通过观察周围食物的变化这个就不用说了.我是说还有没有其它的答案? 人类如何看见并感知能量 人类在死亡前的感受是什么 对于人体美就不说了,我们说一个人美还不如说他（她）基因好,适合当配偶,如果与他（她）结合的话有利于我们的基因传下去,这是进化论的结果.但是其他方面呢,比如说自然美,艺术美,音乐 地球有人类无法认识的高层次生命吗?就像蚂蚁无法认识人类一样道理的? _____________的发明将人类对生物的认识推进到更微观的层次_____________的发明将促使人类对地球以外的太空乃至整个宇宙的认识突飞猛进 请发给我一片六年级关于合作的作文,要写我们组一起做手抄报,要有开头,中间的过程和结尾 Tom's father is working in the bank.(对in the bank提问） 大自然的启示手抄报作文400字（写怎么做手抄报） 写作文和做手抄报哪个好 1.The manager knocked 10%______the charge.A.off B.over C.out D.of2.________does Jim visit you?A.How often B.How long C.How soon D How一共两道题,我拿不准,不一定要详解的 已知函数f(x)={x-1,x=0,讨论自变量趋近于0时的极限? 求f（x）=x/x,g（x）=|x|/x在x趋近于0时的左右极限并说明它们在x趋近于0时的极限是否存在 第六小题的选择题怎么选, 选择题第5、6两小题 急, People were pulling down the old buildings at that time.(改为被动语态)The old buildings ___ ___ ___ ____ by people at that time.