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1.Anna was reading a piece of science fiction,completely _____ to the outside world.A.having been lost B.to be lost C.losing D.lost2._____ what to do with the urgent business,he stayed awake all night.A.Leaving wondering B.Being left wondering C.Bein -Hi,Peter,how are you?-Sorry,I am Jack.You_____our twin brothers.A.were mixing upB.mixed upC.havemixed upD.mix up 已知a,b,c是△ABC三边的长,且满足a^2+2b^2+c^2-2b(a+c)=o,试判断此三角形的形状 She was the first in our class ___the mold:instead of getting a job in education,She decided to become an accountant.A to break B breaking C broke D broken 常温下将甲烷与氧气的混合气体57毫升点燃充分燃烧后恢复原来状态,剩余气体为23毫升,试计算混合气体的体积各是多少. 1.我们的身体每天都要摄入2500毫升水.从食物中获取的水占48%,其余都要靠饮水获得.人体每天靠饮水获得的水是多少毫升 2.某商场上个月的营业额为30万元,这个月的营业额上升了6%,这个月的营 1 The fovernment official was accused of ( ) his position as Mayor to give Jobs to his relatives and friends .A abusing B raising C desiring D condemning 2 I wonder why you won’t do it as ( ) and it’s the third time you ( ) do.A I told you ;do B those kind people gave the boy something to eat ,he would save it up for his little sister 问号处为什么可以写whenever不可以写whatever? 高中化学人教版教科书必修2练习题答案 整本书啊.谢谢了； .急啊! 将人教版高中化学必修一第三、四章中属于离子反应的化学方程式改写成离子方程式 We didn't plan our art exhibition like that but it ______ very well.A.worked out B.went out C.carried on求各选项的详细讲解 Taiwan-born filmmaker Ang Lee won the best director Oscar at the 78th Academy Awards,_____ the highest honor in American movie fields.A.consideredB.consideringC.to considerD.consider After the talk they declared themselves ___.A.satisfied B.satisfy C.satisfying D.to be satisfying Please give the toy to ____ likes it.A.whomever B.anyone C.somebody D.whoever为何不选B? the police finally found the robber lying near the river,____.A.dead B.died这里答案是什么 是不是两个都可以 能不能说下原因! 高中化学必修一……求答案…… 高中化学必修1答案 Though the dangers of smoking tp their own health,A be aware of B aware of为什么答案是B啊,为什么后面部接be啊!好急! 几道英语单项选择题,请选择正确答案.1.— Which would you like to visit,Shanghai Expo Garden or Beijing Bird Nest?— .I prefer to enjoy the 2010 FIFA World Cup at home.A.Both B.Either C.Neither D.None2.— Could I clean the bedroom for 4道英语选择题的解释（正确答案已给出,只需说出选那个答案的理由）（B）___of people have never been there.A,Three fourth B.Three-quarters C.Three-fourth D.Third-four(B) Our life has greatly changed here since___.A.the seve 求这几道选择题（填空题）的答案. 高中化学必修一典型例题 3道简单的物理选择题（如果我选错了,请指出并告诉我错的原因我选择正确答案的原因）如果对了请告诉我第二题为什么选择D.1.下列说法中正确的是（）（这题直接告诉答案）A.加速度增大, 质量为2kg的物体在水平外力F的作用下,从t=0开始在平面直角坐标系XOY所决定的光滑水平面内运动,运动过程中,X方向的位移-时间图像如图1所示,Y方向的速度-时间图像如图2所示.则 下列说法正确 求高中化学第二册（人教版必修加选修）课本复习题答案（第一章和第四章） 请问以下的选择题哪个是正确答案?when i was young ,our family l---- in the south of china.A、live B、will C、lived D、is living 1.Get a shirt one size larger than you usually wear,because this material ____________ when you wash it.A.fadesB.shrinksC.retreatsD.decreases 2.All her children are clever,but the youngest boy is really __________.A.excessiveB.exquisiteC.excitedD.exc 帮我检查检查选择题顺便给下正确答案 谢谢 宋人鄙人得璞玉而献之子罕,子罕不受,鄙人曰："此宝也,宜为君子器,不宜为细人用.”子罕曰：“尔以宝为宝,我以不受子玉为宝.”这段话主要表明( ) A任何事物都有两重性 B事物之间是普遍联 （ ）客观世界有无限多样的矛盾,人的认识（ ）一点一滴地、逐个逐部分地去把握,通过有限去认识无限,（ ）以正确把握客观规律为宗旨的实事求是活动,（ ）也只能是一个无限发展的过程.A 1.同温同压下等容积的两个密闭集气瓶中分别充满12C18O和14N2两种气体（12,18,14在元素左上角）,为什么他们质子数相等,质量不等?分子数呢?2.热稳定性怎么判断 书上说分子间作用力只存在于分子之间，如共价化合物形成的分子，单质。那共价化合物形成的分子单质之间是共价键还是分子作用力？