区别苯和环己烷可用卞列哪种试剂A.H2/Ni室温常压 B.KMnO4/H+ C.Br

题型:单项选择题

问题:

区别苯和环己烷可用卞列哪种试剂

A.H2/Ni室温常压

B.KMnO4/H+

C.Br2/CCl4

D.发烟硫酸

E.Cl2/光

考点:普通考研10医学中药专业硕士有机化学1
题型:单项选择题

Doctor Seuss was born in 1904. By the middle 1950s, he had become one of the best-loved and most successful children’s book writers in the world. His books are very popular with young readers. They enjoy the invented words and the pictures of unusual funny animals and plants.

In 1954, life magazine published(刊登) a report about school children who could not read. The report said many children’s books were not interesting. Doctor Seuss strongly hoped to help children and decided to write books that were interesting and easy to read. He used words with the same ending sound, like fish and wish. He did not receive training in art. Yet, he drew the pictures for most of his books.

In 1957, Dr. Seuss wrote The Cat in the Hat. He used less than 230 words to write the book and even a six-year-old should be able to read it. It was a fun story and easy to read. Children loved it. Their parents loved it, too. Today it is still one of the stories they like best. The success of The Cat in the Hat made him want to write more books for children. In 1960, he wrote a book using less than fifty words. The book is called Green Eggs and Ham.

In 1984, Doctor Seuss won a Pulitzer Prize (普利策奖). He was honored for the education and enjoyment his books provided American children and their parents.

He died at the age of 87, but his influence remains. Millions of his books have been sold worldwide. People say his books helped change the way American children learned to read. Yet, his books are loved by people of all ages. Doctor Seuss once said, "I do not write for children. I write for people.

小题1: Doctor Seuss learned from the magazine that _______.

A.some school children could not read

B.many children’s books were interesting

C.children wanted to learn to read

D.a writer for children was wanted小题2:People like his books because the books ______.

A.are cheap and easy to get

B.were written in different languages

C.are easy and interesting to read

D.were written with invented words小题3:He wrote the book The Cat in the Hat at the age of _____.

A.50

B.53

C.56

D.87小题4:Which of the following is TRUE according to the passage?

A.Doctor Seuss wrote Green Eggs and Ham with over 230 words.

B.Doctor Seuss wrote books only for children in the United States.

C.The Cat in the Hat was written only for six-year-old children.

D.His books provided education and enjoyment for Americans.小题5:From the text we know that Doctor Seuss __________.

A.won a Pulitzer Prize soon after his death

B.sold millions of his books himself worldwide

C.changed American children’s way of reading

D.wrote the largest number of books in the world

题型:单项选择题

有一根镍铬合金线,两端电压为6V时,通过合金线的电流为0.3A,则镍铬合金线的电阻是   Ω;若两端电压减小一半,则镍铬合金线的电流是   A;如果镍铬合金线两端不加电压,则镍铬合金线的电流为   A,镍铬合金线的电阻是   Ω.

题型:单项选择题

法国大革命开始后,1789—1792年是君主立宪制,l792—1804年是法兰西第一共和国,l804—1815是法兰西第一帝国,1815-1830是波旁王朝复辟,l830—l848是七月王朝,l848—1852是第二共和国,1852—l870是法兰西第二帝国, l870年开始第三共和国。从法图 * * 交替、政体转换中得出的结论与史实不符的是

A.80多年间法国政局动荡不安

B.共和派始终占主导地位

C.法国成为近代各种政体的实验场

D.各种力量角逐斗争激烈

题型:单项选择题

It was not until I received the text message that I knew___a serious disease he had been suffering from,and

began to worry about___he could pull through  this Christmas.[ ]

A.what; whether  

B.how ; if    

C. that;  that  

D .which ; how

题型:单项选择题

B向A借款一万元并签订了借款合同,C为保证人,但合同中未约定保证方式。当B未按时偿还借款时,下列说法正确的是( )。

A.A可要求B或C偿还借款

B.A只能要求B偿还借款

C.A只能要求C偿还借款

D.A只能在B无力偿还时,要求C偿还借款

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