试题与答案

下列有关误差的说法中,正确的是( ) A.误差只能尽量减小,而不能消除 B.测量

题型:选择题

题目:

下列有关误差的说法中,正确的是(  )

A.误差只能尽量减小,而不能消除

B.测量可以做到没有误差

C.测量中采用多次测量求平均值的方法,可以消灭误差

D.测量中的误差是由于错误而造成的,因此是可以避免的

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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题型:阅读理解

阅读理解。

     Once there was a boy. He loved sweets very much.  He always asked his father for sweets.

     The boy's father thought hard about how to stop the child from asking for so many sweets. A great

man lived nearby. The boy's father decided to take the boy to him.  He might be able to make the child

give up sweets.

     So they went to the great man. The father asked the great man to help him. But the great man liked

sweets himself. He told the father to bring his son back after a month.  

     During the month, the great man tried to give up eating sweets. At last he did it. When the boy and his

father returned after a month, the great man had a talk with the boy. From then on, the boy didn't ask for

sweets anymore.

     The boy's father felt surprised, "Why didn't you ask my son to give up sweets when we came to you

a month ago?" The man answered, "How could I ask a boy to give up sweets when I loved sweets

myself? In the last month I gave up eating sweets. "

     A person's example is always stronger than words. We should not ask others to do what we can't do

ourselves.

根据短文内容,下列问题。

1. What did the boy love very much?

                                                          

2. Who did the boy's father decide to ask for help?

                                                          

3. How long did it take the great man himself to give up eating sweets ?

                                                          

4. Did the great man help the boy give up the sweets at last? ' 

                                                          

5. What can we learn from the story?

                                                          

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题型:改错题

(6分)阅读下列材料:

材料一 乃秦孝公用商君,坏井田,开阡陌,急耕战之赏,……倾邻国而雄诸侯。

——《汉书·食货志》

材料二 为了便于学习和接受汉族的先进文化,……孝文帝要求南迁的鲜卑族一律改穿汉服,学习汉语,采用汉姓,提倡与汉人通婚。……逐渐融入汉族人民的生活之中。

——北师大版教材

材料三 忽必烈即位之后大力推行以采用汉法为主要内容的改革。……推行重农政策,……取得显著成效。

——北师大版教材

请回答:

(1)材料一中“商君”是谁?依据材料并结合所学知识指出此次改革的性质。(2分)

(2)据材料二并结合所学知识分析孝文帝实行这些改革的主要历史作用?(1分)

(3)据材料三并结合所学知识,举出两例说明忽必烈重视农业的主要表现。(2分)

(4)综合上述改革,从中你能得到什么认识?(1分)

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