【题目】对于函数f（x）＝ax2＋bx＋c（a∈R，且a≠0），在使f（x）≥M成立的所有实数M中，我们把M的最大值Mmax叫做函数f（x）＝ax2＋bx＋c的下确界，则f（x）=x2－4x＋6的下确界为________．
科目：高中地理 来源：山东省潍坊市2016-2017学年高二下学期摸底统考（5月）高二地理试卷 题型：综合题
阅读图文材料，完成下列要求。
抚仙湖地处云贵高原，因湖水清澈见底，晶莹剔透，被古人称为“琉璃万顷”。近年来，湖水污染日益严重，尤其是湖泊北部水质更差。下图示意抚仙湖流域范围图。
（l）分析抚仙湖北部水质更差的主要原因。
（2）针对抚仙湖水质差的现状，从控制污染源方面提出合理化建议。
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科目：高中地理 来源： 题型：
【题目】
--- Have you known Dr Jackson for a long time?
--- Yes, since she the Chinese Society.
A. has joined
B. joins
C. had joined
D. joined
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科目：高中地理 来源： 题型：
【题目】
--- Try not to work yourself too hard. Take it easy.
--- Thanks． （2012．全国Ⅱ）
A. So what?
B. No way.
C. What for?
D. You too.
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科目：高中地理 来源： 题型：
【题目】--- Honey, the cat’s stuck in the tree. Can you turn off the TV and get a ladder. . . ?
--- Oh，it jumped off. (2012．江苏)
A. Never mind.
B. All right.
C. No problem*
D. Take care.
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科目：高中地理 来源： 题型：
【题目】根据汉语意思完成句子，一空一词（共5小题；每小题1分，共5分）
【1】他一听到考试没通过的消息，就哭着冲了出去。
the news that he didn’t pass the examination, he rushed out crying.
【2】如果水加热到一定的温度，就会沸腾。
to a certain degree, water will boil.
【3】我宁愿不去那儿工作
I would rather to work there.
【4】因为生病，他没去上去上学。
was because he was ill he didn’t go to school.
【5】我碰到了一个从来没见过的单词。
I a word I’d never seen before.
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科目：高中地理 来源： 题型：
【题目】
Kids don’t have to pay bills，cook dinners，or manage car polls (合伙使用汽车)．But—just like adults—they have their share of daily demands and things that don’t go smoothly.If frustrations and disappointments pile up，kids can get worried.
It’s natural for all kids to worry at times，and because of personality differences，some may worry more than others.Luckily，parents can help kids manage worry and deal with everyday problems with ease.Kids who can do that develop a sense of confidence and optimism that will help them master life’s challenges，big and small.
What kids worry about is often related to the age and stage they’re at.Kids and preteens typically worry about things like grades，tests，their changing bodies，fitting in with friends，a goal they missed at the soccer game，or whether they’ll make the team.They may worry about social troubles like cliques (派系，小圈子)，peer (同龄人) pressure，or whether they’ll be bullied (欺负)，laughed at，or left out.Because they’re beginning to feel more a part of the larger world around them，preteens also may worry about world events or issues they hear about on the news or at school.Things like terrorism，war，pollution，global warming，endangered animals，and natural disasters can all become a source of worry.
【1】From the passage，we learn that________.
A．not kids but adults may get worried about something
B．the worries that kids experience vary from one to another
C．kids worry about the same issues，regardless of their age
D．preteens may not worry about fire or earthquakes
【2】What is the third paragraph mainly about?
A．Advice on removing kids’ worries.
B．The negative results of getting worried.
C．Why kids get worried.
D．What kids may worry about.
【3】The next paragraph might talk about________.
A．suggestions for kids to deal with worries
B．the importance of avoiding getting worried
C．different opinions on kids getting worried
D．subjects that teenagers and adults worry about
【4】The passage is most likely intended for________.
A．scientists
B．teachers
C．parents
D．doctors
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科目：高中地理 来源： 题型：
【题目】结合个人的感悟对汉字进行新的理解，可以赋予汉字特殊的意义。请仿照示例，自选两个汉字进行别解，要求紧扣字形，有积极意义，表述简练。
示例：惩——对心的征服，才是处罚的最终目的。
悟——做思考的我，才能形成我的思想。
答：
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