总体的基本特征可概括为()。 A.同质性 B.差异性 C.大量性 D.随机性 E.确

题型:多项选择题

问题:

总体的基本特征可概括为()。

A.同质性

B.差异性

C.大量性

D.随机性

E.确定性

考点:统计从业统计基础知识与统计实务统计从业资格考试统计基础知识与统计实务真题2011年
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  希腊是位于欧洲南部的一个地中海沿岸国家,有古老的文化,是西方文明之源,首都是雅典。北京时间2008年3月24日17时,北京奥运会圣火火种采集仪式在希腊伯罗奔尼撒半岛西部奥林匹亚山的赫拉神殿举行。圣火遵循古典方式用凹面镜反射太阳光点燃。完成1—2题

1、为迎接奥运会,北京市政府大力推广学习英语活动,其原因是[ ]

A.英语是世界上使用人数最多的语言

B.英语是世界上使用最广泛的语言

C.英语是联合国规定的唯一工作语言

D.英国是世界上最大的发达国家

2、北京奥运会举行期间,地中海沿岸国家希腊的气候特点是[ ]

A.高温多雨

B.温和少雨

C.炎热干燥

D.凉爽多雨

题型:多项选择题

Last year, a report by a committee of education experts said that a lot of American students cannot write well. The report noted the concerns of business leaders and teachers. The experts said that more students should have to pass a writing test before they can finish high school. They pointed out that major college entrance tests are changing now to include a writing part.

Educators know that teaching students to write well is not easy. One problem is the amount of time needed to read through large amounts of work. So some companies have developed computer programs. These can grade student writing much more quickly than a person can. Writing tests can also cost less to carry out by computer than paper-and-pencil. These computer systems are known as e-readers. They use artificial (人工的) intelligence to think in a way like teachers. In the state of Indiana, computer grading of a statewide writing test began with a test of the system itself. For two years, both a computer and humans graded the student writing. Officials say there was almost no difference between the computer grades and those given by the human readers.

The entrance test commonly used by business schools, the GMAT, already uses e-readers. The GRE and TOEFL tests might start; officials are deciding. The GRE is the Graduate Record Examination. TOEFL is the Test of English as a Foreign Language.

Systems are also being used to grade writing in college classes. The computers read a few hundred examples of student writing already graded by humans. Then the systems compare new writings against those already examined.

How do teachers feel all about this? Many say machines can never do the job as well as people can. A computer can find spelling and grammar mistakes. But these teachers say it can never really understand what a writer is trying to say. Critics say a program cannot follow a thought or judge humor or understand a beautifully expressed idea.

But inventors of the programs say computer grading guarantees that each piece of writing is graded in the same way. They also say the systems are meant to judge knowledge more than creativity.

1.What do the teachers think of the computer system?

A. They think highly of the computer systems.

B. They think that computers cannot grade writing as well as people.

C. They believe that computers can understand a writer’s idea well

D. They are glad computers will spare their effort to correct students’ school work.

2.From the first paragraph we can conclude that _________.

A. American students’ writing ability is being improved

B. American students’ writing ability is not satisfactory

C. business leaders and teachers are not worried about students’ writing

D. all college entrance tests will include a writing part

3.Which of the following is NOT the advantage of e-readers?

A. Saving much of teachers’ time.                     

B. Saving a lot of money.

C. Being fair and objective.                              

D. Appreciating humor and beauty

4.The best title of this passage might be _________.

A. Computer-graded Writing                            

B. Human-graded Writing

C. How to Improve Students’ Writing                

D. Advantages of E-readers

题型:多项选择题

一名前臂骨折患者,经手法复位,小夹板固定5小时,感觉剧痛,手指麻木、肿胀、活动不灵,其主要原因是()。

A.神经损伤

B.神经受压和静脉受压

C.动脉受压和静脉受压

D.静脉受压

E.动脉受压

题型:多项选择题

下列土方施工机械中,( )适用于500m范围内的移挖作填。

A.推土机
B.铲运机
C.单斗挖土机
D.装载机

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