灭绝
地球上消失的生命——生命历史上的大灭绝.pdf
生命从哪里来，又往何处去，在漫长的演化过程中，它们又经历了什么？这是经久不息的命题。在数十亿年的地质历史进程中，不断有各种生命形式在我们这个蓝色的星球上出现—繁盛—消亡。它们有的转瞬即逝，有的经久不衰，每一种生物都有其与众不同的生存哲学。本书不但从宏观尺度介绍了地球各个地质历史时
灭绝的哺乳动物图鉴.pdf
本书以图文并茂、深入浅出的形式，汲取当代古脊椎动物学领域最新科研成果，系统的勾画了哺乳动物的分类体系和演化历史。
灭绝前夜——重庆正阳恐龙探秘.pdf
这是一本介绍恐龙灭绝假说及重庆正阳恐龙化石的科学普及读物。本书用通俗的语言，介绍了一些关于恐龙的基本常识，世界上关于恐龙灭绝的多种假说，重庆正阳白垩纪晚期恐龙的发现历史、恐龙类型、生存时代、生存环境、死亡原因。书中引用了大量国内学者的精美化石研究图片，并配有手绘的复原图。
The word “address” in Paragraph 1 is closest in meaning to _____.
The word “address” in Paragraph 1 is closest in meaning to \_\_\_\__.
Which of the following is the best title for the passage?
Which of the following is the best title for the passage?
Passage 2Questions 6 to 10 are based on the following passage: Half of the world’s coral reefs(珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive. Even if global warning were to right now, scientists predict th
Passage 2Questions 6 to 10 are based on the following passage: Half of the world’s coral reefs(珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive. Even if