学生作业评价

已知A={x x^2-px-2=0},B={x x^2+qx+r=0} 且AUB={-2,1,5},A交集B={-2}求p ,q,r谢拉 体现中华民族坚强抗战的精神的历史事件如题.是历史事件不是故事,最好能有简介, 在北京发生了什么事变揭开了中华民族伟大的抗日民族解放战争的序幕 His sister____watch TV.A.want to B.wants to C.want D.wants选什么,为什么? .Jeft doesn't like to be a _______.(wait) Love doesn't know gender,I only want to love him.Don't wait until it's too late.翻译. 把三视图还原成几何体并且画图标明尺寸如图 每个视图都为边长为a的正方形 还有一条斜线 --How do you like the songs sung by Liu Huan?--They were wonderful ,( )I couldn't hear his words clearly sometimes.A.because B.so C.but D.if请说明原因. 中华民族在抗日战争中表现出来的伟大民族精神主要包括哪些内容?在拟一个关于抗战胜利的富有教育意义的主题?、 结合材料二,谈谈伟大的民族精神在中华民族的抗日和发展中有何作用 抗战精神和中华民族精神是什么关系 改错：1、I often get letters to my pen pal .2、I like talk to people .I meet interesting people every day .3、Jenny wants to a reporter .4、Where does your sister work She work in a hospital .5、My work is interesting ,but kind dangerous . I OFTEN WRITE LETTERS TO MY PEN PAYS ,BUT _____WRITES ME BACK.(EVERYBODY,SOMEBODY,NOBODY,ANYBODY) 掀起全国抗日救亡新高潮的是A五卅运动B“一二.九”运动C五四运动D整风运动 为什么说一二九运动掀起了抗日救亡运动的新高潮 兰可以组什么词 he often ( ) a letter （ )his pen pal in australia.填词 兰的辨字组词是什么意思? He often tells his pen pal ___his favorites by e-mail 请问兰字怎么组词 He is waiting for his pen pal对his pen pal提问 He________(打电话)to his pen pal when Igot to his house yesterday快点吧Orz、、、、Orz。 微积分,证明 微积分证明,急 2/1 2/1 2/1 2/1 2/1 2/1 2/1=10填加减乘除括号 I ( )(send) an email to my friend now.填什么啊 如图,已知点P是平行四边形ABCD所在平面外一点,E,F分别是PA,BD上的点且PE:EA=BF:FD求证EF//平面PBC.不要用面面平行,还没教. 在底面是菱形的四棱锥P-ABCD中,点E在PD上,且PE：ED=2：1,在棱PC上是否存在一点F使BF平行于平面AEC?若存在给出证明,若不存在,说明理由.都不对 雅思阅读判断题答案简写真的不扣分么,我快急死了啊,今天刚考的,吓死了可能运气比较好，最后得分了，不过以后还是别犯这种错误，要是真有这样的也别担心，好好准备口语就好了 兰怎么组词 兰的组词有哪些 兰组词有哪些