问题 选择题

探究某一问题成功的关键是

A.作出符合科学事实的假设

B.提出有研究价值的问题

C.制定出恰当的科学探究计划

D.写出高水平的论文

答案

答案:C

题目分析:科学探究的基本环节是:提出问题→作出假设→制定计划→实施计划→表达交流.其中能够提出有研究价值的问题,并作出符合科学事实的假设,是探究成功的前提,制定出恰当的科学探究计划,则是探究成功的关键.所以科学探究的六个环节中,探究成功的关键是制定出恰当的科学探究计划。

点评:此题是一道实验操作题,学会科学探究的基本环节,是掌握并进行探究实验的前提。

阅读理解

阅读短文,根据短文内容完成句子,每空一词。

     Once there were five beggars (乞丐). One was English, one Turkish (土耳其人), one Greek (希腊人),

one was an Arab (阿拉伯人) and one was Persian (波斯人). One day they met and decided to stay together,

sharing what they had and helping each other in trouble times.

    Soon a man passed them in the street and gave them a coin. They talked about what to do with it. At last

they decided to buy something to eat.

     "Let's buy some grapes!" said the Englishman. But the Turkish wanted"uzum", the Arab"aneb", the Greek

"stafelea", and the Persian insisted on (坚持) "angur". They did not understand each other's language very well.

Soon they quarreled and even fought.

     While they were fighting about how to spend the money, a stranger came along. He knew all the five

languages. He asked them why they were fighting. After they told him, he said,"Give me your coin. I will buy

what you want."

     He was soon back with a bunch of grapes. Each beggar was happy, as each had what he had wanted.

They all asked for the same thing, but the word for "grapes" is different in different languages.

     If people could understand each other, there would be no need to fight.

1. The five ___________ came from different countries, so they didn't speak the ___________ language.

2. ___________ the money, they decided to buy ___________ to eat.

3. They quarreled and even ___________ because they didn't ___________ each other's language very well.

4. With the ___________ of the stranger, they were ___________ to get what they wanted.

5. In fact, all of them wanted to buy ___________. If everyone can know different languages,

    we have no ___________ understanding people.

选择题