问题 单项选择题

下列对原核细胞与真核细胞的有关叙述正确的是()

A.原核细胞没有叶绿体,不能进行光合作用

B.只有真核细胞才可以进行有丝分裂和减数分裂

C.原核细胞只有DNA这一种核酸

D.真核细胞有染色体,而原核细胞有染色质

答案

参考答案:B

解析:蓝藻能进行光合作用但没有叶绿体,故A错;有丝分裂、无丝分裂和减数分裂是真核生物具有的分裂方式,故B正确;原核生物和真核生物的细胞中同时含有DNA和RNA两种核酸,故C错;染色体(质)是真核生物具有的结构,故D错。考点:本题主要考查原核生物和真核生物的区别,意在考查考生能理解所学知识的要点,把握知识间的内在联系,形成知识的网络结构的能力。

问答题
阅读理解

For nearly 100 years, the heartbroken Little Mermaid has sat on a rock looking out over Copenhagen's port but now the sculpture ,based on the famous fairytale, is heading back out to sea, set for China.

The small bronze statue inspired by the tale of author Hans Christian Andersen and unveiled in 1913, is a major tourist attraction in Copenhagen. But her life has not always been easy. She has been beheaded twice, had her arm cut off, was blown off her rock in 2003 and was dressed in a Muslim headscarf two years ago in a protest - but she never left her native country.

This week she was lifted from the harbor, boxed, and shipped to Shanghai where she is the star guest in the Danish Pavilion at EXPO 2010 which runs until October 31. Details over her trip were not revealed due to security issues.

"The Little Mermaid," published in 1837, is a sad story about a mermaid who falls in love with a prince and gives up her life in the sea and her tail for legs.

The fairytale has been adapted many times into stage shows and into a Disney movie.

Copenhagen mayor Frank Jensen said in a statement that the loan of The Little Mermaid was part of a cultural exchange between Denmark and China. "I am convinced that she will be an excellent ambassador of Denmark, particularly since the Chinese already are very fond of Hans Christian Andersen and his fairytales," he said in a statement.

Her departure from Copenhagen will not leave the harbor empty. Chinese artist Ai Weiwei has created a video installation(设备/装置)to be installed at her spot.

The Little Mermaid's 165 cm (65 inches) tall sculpture, which sits on a granite block, was created in 1913 by Edvard Eriksen.

小题1:The following statements are true EXCEPT________________.

A.the statue of The Little Mermaid will be given to China as a gift

B.the statue of The Little Mermaid is a major tourist attraction in Copenhagen

C.The Little Mermaid is a famous fairytale written by Hans Christian Andersen

D.the story of The Little Mermaid was once adapted into a Disney movie小题2:The underlined word “departure” here means_______________.

A.escaping

B.retiring

C.arriving

D.leaving小题3:From the passage, we can infer that ________________.

A.Chinese artist Ai Weiwei has created another Little Mermaid instead

B.the Danish people don’t like the statue of The Little Mermaid

C.the statue of The Little Mermaid will return to Denmark in the future

D.Edvard Eriksen wrote the story of the Little Mermaid