解关于x的不等式ax2-(1+a)x+1>0.

题型:解答题

问题:

解关于x的不等式ax2-(1+a)x+1>0.

考点:一元二次不等式及其解法
题型:解答题

Like most English children, I learned foreign languages at school. When I made my first visit to the United States, I was sure I could have a nice and easy holiday without any language problem. But how wrong I was!

At the American airport, I was looking for a public telephone to tell my friend Danny that I had arrived. An American asked if he could help me. "Yes," I said, '1 want to give my friend a ring."

"Well, that's nice. Are you getting married?" he asked. "No," I replied, "I just want to tell him I have arrived." "Oh," he said, "there is a phone downstairs on the first floor." "But we're on the first floor now," I said.

"Well, I don't know what you are talking about Maybe you aren't feeling too well after your journey," he said. "Just go and wash up, and you will feel a lot better." And he went off, leaving me wondering where on earth I was: At home we wash up after a meal to get the cups and plates clean. How can I wash up at an airport?

At last we did meet. Danny explained the misunderstanding: Americans say "to give someone a call", but we English say "to give somebody a ring". When we say "to wash your hands", they say "to wash up". And Englishmen start numbering from the ground floor so the first floor is the second for Americans.

小题1:The writer went to America by  ______.

A.plane

B.ship

C.bus

D.train小题2:The writer went to America for______   .

A.education

B.business

C.holiday

D.friendship小题3:The American thought "a ring" should be a________  .

A.phone call

B.present

C.person

D.letter小题4:Englishmen usually wash up________ .

A.after dinner

B.after a journey

C.when they are tired

D.before they telephone someone小题5:The third floor in England is the ______floor in America.

A.first

B.second

C.third

D.Fourth

题型:解答题

a与b的差的5倍用式子表示为a-5b.______.

题型:解答题

阅读下面的文字,调整画线部分的语序,使全句协调连贯。(可适当删减文字,不得改变语意) 

  为 加 快 传 播 速 度、增 强 时 效 性,①承 载 容 量 得 以 加 大、前 沿 性 得 以 提 升,发 行 量 得 以 逐 步 扩 大、规 模 效 益 得 以 提 高,本 刊 决 定 从  2004 年 起 改 为 半 月 刊。

① 改为:________________________________________________

② 改为:________________________________________________

题型:解答题

设有数组定义语句:Dim a(5)As Integer,List1为列表框控件。下列给数组元素赋值的语句错误的是( )。

A.打开过程文件时,其中的主过程自动调入内存

B.同一时刻只能打开一个过程,打开新的过程后,旧的过程自动关闭

C.用命令DOWITH调用过程时,过程文件无需打开就可调用其中的过程

D.用命令DOWITHIN调用过程时,过程文件无需打开,就可调用其中的过程

题型:解答题

积极性的挫折反应主要有()。

A、坚持目标、继续努力

B、降低目标、改变行为

C、改换目标、取而代之

D、放弃目标,不再努力

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