问题 选择题

小明在探究“导体的电阻与电体的长度是否有关”的实验中,选择材料、横截面积均相同的导体做实验,记录的实验数据如表.根据表中的数据可得出“导体的电阻大小与导体的长度有关”的结论,则从表中提取的能得出该结论的信息是(  )

电体的长度L/cm51015
导体的电阻R/Ω246

A.导体的电阻与导体的长度成正比

B.导体的长度与导体的电阻成正比

C.导体的电阻都是其长度的2.5倍

D.导体的长度变化,导体的电阻变化

答案

由实验数据知,导线长度成倍增加,电阻也成倍增加,并且增加的倍数相同,也就是电阻与导体长度成正比.

故选A.

单项选择题
阅读理解

World War II lasted from 1939 to 1945. Life changed for everybody, including women and children because of the war. Millions of people lost their lives during the war. The Diary of a Young Girl was a record of that time. The book was written by a girl named Anne Frank.

Anne Frank was born in Germany in June 1929. Because the German Nazi(纳粹分子) hated the Jews(犹太人) and warned to kill them, her family had to move to another country. In July 1942, they went into hiding in a secret place in her father's office. During that difficult time, Anne kept writing diaries until she and her family were discovered by the Nazis in August 1944. They were caught and sent to a Nazi camp. The next year, her mother died. In the same year, she and her elder sister died of illness, before the war ended.

After the war, her father collected her diaries and the book The Diary of a Young Girl came out in 1947. It has been put into over 30 languages since then. The book has been read by people all over the world. In her diary, Anne wrote down her thoughts, her feelings, her hopes and her dreams for the future, "I want the diary to be my friend, and I'm going to call this friend Kitty." "I can't spend all day complaining because it's impossible to have any fun! ... Every day, I feel the beauty of nature and the goodness of the people around me. With all that, why should 1 be sad?"

The Diary of a Young Girl has also become a symbol of the greatness of the human spirit. It is called one of the wisest and most moving records on war.

小题1:In which year did Anne die of illness?

A.In 1939.

B.In 1942.

C.In 1944.

D.In 1945.小题2: According to the passage, "Kitty" is ________.

A.her diary

B.her elder sister

C.her mother

D.her hiding place小题3:Which of the following is true?

A.Anne was lazy, sad and complained all day.

B.The book is mainly about Anne's school life.

C.Anne loved life though she was in difficult time.

D.The book has been put into nearly 30 languages.小题4: From the passage, we can infer(推断) ________.

A.Anne was born in Germany

B.Anne was a Jew

C.Anne's father collected the diaries

D.Anne was a Nazi