已知关于x的一元二次方程(k-1)x2-k2x-1=0的一个根是-1,求k的值.

题型:解答题

问题:

已知关于x的一元二次方程(k-1)x2-k2x-1=0的一个根是-1,求k的值.方程是否还有其它根?如果有,试求出来.

考点:一元二次方程的解法
题型:解答题

大剂量硫酸镁治疗妊娠高血压综合征最早出现的中毒反应是()。

A.心率明显减慢

B.呼吸次数明显减少

C.血压大幅度降低

D.尿量明显减少

E.膝反射消失

题型:解答题
阅读下面短文,掌握其大意,然后从36~55各题所给的四个选项(A、B、C和D)中选出最佳选项,并在答题卡上将该项涂黑。
Once upon a time there was a child ready to be born. So one day he   36  God, “They tell me you are sending me to   37  tomorrow but how am I going to live there being so   38 
and helpless?”
God replied, “Among the many   39 , I chose one for you. She will be   40  for you and will take care of you.”
But the child wasn’t   41  he really wanted to go. “But tell me, here in Heaven, I don’t do
  42  but sing and smile, that’s  43  for me to be happy.” “Your angel will sing for you and will also   44  for you every day. And you will   45  your angel’s love and be happy.”
“And   46  am I going to be able to understand when people talk to me.” The child continued, “if I don’t know the   47  that men talk?”
God patted him on the head and said, “your angel will tell you the most beautiful and sweet
  48   you will ever hear, and with much   49  and care, your angel will teach you how to
  50 .”
“And what am I going to do when I want to talk to you?”
“Your angel will place your   51  together and will teach you how to pray(祈祷).”
“I’ve heard that on earth there are bad men, who will   52  me?”
“Your angel will defend you even if it means   53  her life!”
And then God   54  the child on the shoulder and said, “Your angel’s name is not   55  
to remember. You will simply call her Mommy.”
小题1:
A.askedB.answeredC.taught D.told
小题2:
A.heavenB.hellC.earthD.space
小题3:
A.bigB.smallC.strongD.stupid
小题4:
A.nursesB.doctorsC.teachersD.angels
小题5:
A.hidingB.waitingC.headingD.voting
小题6:
A.sureB.urgent C.consciousD.impressive
小题7:
A.anythingB.somethingC.everythingD.nothing
小题8:
A.muchB.littleC.fewD.enough
小题9:
A.clearB.diveC.smileD.react
小题10:
A.damageB.feelC.governD.resign
小题11:
A.whenB.whyC.howD.whether
小题12:
A.languageB.meaningC.topicD.politics
小题13:
A.poemsB.stories C.argumentsD.words
小题14:
A.strengthB.patienceC.warningD.thinking
小题15:
A.singB.danceC.speakD.paint
小题16:
A.handsB.feetC.armsD.legs
小题17:
A.replaceB.convertC.educateD.protect
小题18:
A.buryingB.riskingC.experiencingD.attacking
小题19:
A.hitB.ruined C.touchedD.cleaned
小题20:
A.hardB.easyC.strangeD.convenient
题型:解答题

当地管理人员的不可移动性带来的问题是( )

A.影响当地管理人员的士气

B.阻碍了子公司下级管埋人员的提拔

C.跨国公司很难留住那些富有经营管理才能的外国人

D.降低了当地管理人员的收入

E.使当地管理人员过分热衷于升迁

题型:解答题

传播主体会对传播效果之间产生什么影响?

题型:解答题

CSS不允许在一个样式表中一个HTML标签存在多个样式规则,此限制不适用于()。

A、组选择器

B、上下文选择器

C、伪元素选择器

D、标签选择器

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