把一张周长24分米的正方形纸剪成一个最大的圆.圆的周长和面积各是多少?

题型:解答题

问题:

把一张周长24分米的正方形纸剪成一个最大的圆.圆的周长和面积各是多少?

考点:圆的周长
题型:解答题

1. The Dream It is everyone’s dream to work at home or not work at all. You can plan your own hours and work when you want to. There is no more rush hour and no hours that people waste when they get to and from a job every day.

2. The Fact The fact is that this dream can be attained. You can stay at home, work when you want to and make money when you need to. There are plenty of chances for you to make money at home, just by using your computer and the Internet.

3. Start Today!  Educate yourself, look closely into all the chances and decide on what works best for you. It will not happen during one night, but you can make the decision today and start to make it happen today.

4. How Could You Do It? Do you have a blog, miniblog or a personal website like millions of other people? Are you using it to make money? Most of these blogs and website owners are not. But you can do that!

5. _________When you have your computer and the Internet working for you, your businesses will be working for you 24 hours a day, seven days a week. You will make money while you sleep, travel or do whatever you want to do all day long.

6. Get Going! There are many ways you can make money with your computer. And you can begin your stay-at-home businesses with just a little money. What are you waiting for?

小题1:In which part of a newspaper would you most probably read this passage?

A.Sports.

B.News.

C.Culture.

D.Business.小题2:What does the underlined word “attained”in Point 2 mean?

A.Broken.

B.Achieved.

C.Lost.

D.Destroyed ( 毁坏 ).小题3:What’s the best title for Point 5?

A.Sleep 24 Hours a Day.

B.Make Money Every moment.

C.Play All Day Long.

D.Travel Around the World .小题4:Which of the following is NOT TRUE according to the passage?

A.People need a lot of money to start a stay-at-home business.

B.People can even use their blogs to make money.

C.People can plan their own time when they work at home.

D.People can make the best decision and start to make it happy today.

题型:解答题

清除脐部污垢通常用

A.洗必泰

B.酒精

C.肥皂水

D.乙醚

E.汽油

题型:解答题

[教学设计题]阅读下 * * 个材料,按要求完成任务。

材料一普通高中化学课程标准

【内容标准】能描述元素周期表的结构,知道金属、非金属在元素周期表中的位置及其性质的递变规律;认识化学键的涵义,知道离子键和共价键的形成。

材料二某教科书的知识结构体系

第一章物质结构元素周期律

第一节元素周期表

第二节元素周期律

第三节化学键

第二章化学反应与能量

第三章有机化合物

第四章化学与自然资源的开发利用

材料三某版化学必修2教材"化学键"内容。

从元素周期表我们可以看出,到目前为止,已经发现的元素只有一百多种。然而,由这一百多种元素的原子组成的物质却数以千万计。那么,元素的原子通过什么作用形成如此丰富多彩的物质呢?

一、离子键

【实验1-2】

取一块绿豆粒大的金属钠(切去氧化层),用滤纸吸净煤油,放在石棉网上,用酒精灯微热。待钠熔成球状时,将盛氯气的集气瓶倒扣在钠的上方(如图1-10),观察现象。

思考与交流

1.画出钠和氯的原子结构示意图。

2.试解释氯化钠是怎样形成的。

要求:

(1)回答材料三"思考与交流"中的问题1和问题2。

(2)完成"离子键"的教学设计片段,内容包括教学目标、教学方法和教学过程(不少于300字)。

题型:解答题

男性,40岁。不规则发热40天,伴纳差、腹胀,右上腹痛,近1周干咳伴右下胸痛来诊。体检:体温39℃,消瘦,心肺(-),右腋前线第7、8肋间有局限性压痛,局部软组织肿胀,肝肋下3cm,质中、有压痛。B超见肝脏有一4cm×3.5cm液平段,肝穿刺抽出50ml液体,经抗阿米巴药物治疗10d后,体温正常,脓腔缩小,诊断为阿米巴肝脓肿。

[假设信息]假如该患者,同时有腹泻,大便光镜检找到溶组织阿米巴滋养体,对肠内外阿米巴病均有疗效的首选()

A.氯喹

B.依米丁

C.5-羟基喹啉

D.甲硝唑

E.卡巴砷

题型:解答题

下列关于急性胰腺炎病因的叙述,错误的是()

A.胆汁逆流入胰管

B.乙醇对胰腺有直接毒性作用

C.ERCP检查可引发胰腺炎

D.与高脂血症关系不清

E.消化性溃疡易导致胰腺炎

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