问题 选择题

下列说明生物能适应环境的实例,错误的是(  )

A.荒漠中生活的骆驼刺,地下的根比地上部分长很多

B.蚯蚓的活动和取食使土壤变得疏松

C.炎热缺水的环境中生活的骆驼,尿液非常少,当体温升高到46℃时才会出汗

D.北极海域中生活的海豹,胸部皮下脂肪的厚度可达60mm

答案

生物必须适应环境才能生存,如沙漠上的植物必须耐旱才能生存.

A、骆驼刺根系发达,可以吸收到沙漠深处的水分,适应干旱缺水的沙漠环境,故不符合题意;

B、蚯蚓的活动使土壤变得疏松,是生物蚯蚓对环境的影响.故符合题意.

C、炎热缺水的环境中生活的骆驼,尿液非常少,当体温升高到46℃时才会出汗,可以减少体内水分的消耗,适应干旱缺水的环境,故不符合题意;

D、北极地区气候寒冷,温度很低.生活在北极地区的海豹,胸部皮下脂肪的厚度可以达到60毫米,脂肪保暖有了利于保持体温维持正常的生长,胸部皮下的脂肪厚可以保护胸内的器官心脏避免冻伤.适应寒冷的北极环境.故不符合题意.

故选B.

阅读理解

A story from the Bible tells of old Babylon, where the men decided to build a tower that would touch the sky. But God was unhappy, and he made them speak different languages. They couldn’t understand each other, so their dream never came true.

Yet the dream remains alive: if all men speak the same language, they can do anything. L. L. Zamenhof from Poland was among the men who pursue this dream. He developed Esperanto(世界语)between 1877 and 1885.

As the most successful man-made world language, it is spoken by over two million people around the world. Last month, the World Esperanto Congress(大会), dealing with language rights, ended in Sweden. Most Esperanto speakers are in Central and Eastern Europe and in East Asia, particularly Chinese mainland.

Esperanto has two advantages. First, it’s easy. Each letter has exactly one sound and there are just 16 basic grammar rules. The second advantage is that it belongs to no one country. But Esperanto has only reached a small number of people compared with natural languages widely used around the world---such as English or Chinese. While these languages are deeply connected with their nations and cultures, Esperanto doesn’t have this background.

Will Esperanto really become a global language? It remains a question.

72.   The writer tells us a story at the beginning to___________.

A.explain why men have been making the effort to create a language shared by all

B.explain why men now speak different languages

C.show the relationship between man and God

D.prove that language is very important

73.   What does the underlined word “pursue” in the second paragraph mean?

A.“realize”.           B. “work for”.   C.“be against”.         D. “follow”.

74.   What is the basic difference between Esperanto and other natural languages?

A.More people speak English than Esperanto.

B.Esperanto words are easier to spell.

C.Esperanto has fewer grammar rules.

D.Esperanto is not supported by any country or culture.

75.   What does the story mainly talk about?

A.Advantages and disadvantages of Esperanto.

B.Man’s dream of sharing the same language has come true.

C.The most successfully planned language---Esperanto.

D.Comparison of Esperanto and other languages like English and Chinese.

填空题