问题 选择题

下列叙述中与地球上具有有利于生命存在的温度条件无直接关系的是

A.地球与太阳的距离

B.地球的体积质量适中

C.地球上具有大气

D.地球的自转和公转周期适中

答案

答案:B

地球的特殊性:地球是太阳系中唯一有生命存在的天体。地球上存在生命的条件和原因如下表所示。

地球上存在生命的条件形成生命条件的原因
外部条件太阳光照稳定太阳从诞生至今没有明显的变化
运行轨道安全地球附近的大、小行星绕日公转具有同向性、共面性、近圆性的特征,它们各行其道、互不干扰。
自身条件有适宜的温度日、地距离适中,自转周期不长不短,使地表平均气温约为150C,地球表面温度的日变化和年变化都较小。
有适合生物呼吸的大气地球的体积和质量适中,吸引气体形成大气层,并经过漫长的演化形成以氮和氧为主的大气
有液态的水地球内部的水随物质运动带到地表,形成原始海洋。
所以本题选择B选项。

阅读理解

阅读下面的短文,按要求完成所给任务。

     

     Reading is a very good hobby for all the students. You can know much about the world ①______ the help

of all kinds of books. I'm sure everyone has a favorite subject. For example, some are interested in animals,

some in history, and some are interested in literature. Mine is science. I like ②    it     because it's fun and

educational. 

     My favorite novel is Around the World in Eighty Days. ③It was written by Jules Verne, a French writer.

Jules Verne was regarded as father of Modern Science Fiction because he devoted (奉献) himself to literature

and wrote several ④well-known scientific romances.

     The exciting story of Around the World in Eighty Days tells us about an English gentleman whose name is

Mr. Phileas Fogg, He travels around the world in eighty days. From the story, we can see the writer's love for

the sea, traveling and adventure (冒险). In fact, they played an important role in his life. ⑤多亏了 the writer's

imagination, language skills and scientific and geographical (地理的) knowledge, we can feel as if we were

there when we read the story.

1. 根据上下文写出①处所缺的单词。

    ______________________________

2. 写出②处画线单词所指代的内容。 

    ______________________________

3. 将③处改为主动语态。

    Jules Verne, the French writer _________ the novel Around the World in Eighty Days.

4.  写出④处画线单词的同义词。 

    ______________________________

5. 将⑤处画线汉语翻译成英语。

     ______________________________

判断题