Câu hỏi:
07/04/2020 242Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 44 to 50.
Life originated in the early seas less than a billion years after Earth was formed. Yet another three billion years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.
What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on mega fossils — relatively large specimens of essentially whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive mega fossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by animals that preyed on the plant-eaters. Moreover, the mega fossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago. Recently, however, paleontologists have been taking a closer look at the sediments below this Silurian-Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rocks in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans — plant microfossils and microscopic pieces of small animals. In many instances the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.
These newly discovered fossils have not only revealed the existence of previously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our views about the nature of the early plant and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-forms.
With which of the following conclusions would the author probably agree?
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Giải bởi Vietjack
Đáp án A
Thông tin: Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.
Dịch nghĩa: Quá trình chuyển đổi của cuộc sống từ biển vào đất có lẽ cũng là một thách thức tiến hóa như là nguồn gốc của sự sống.
Phương án A. The evolution of terrestrial life was as complicated as the origin of life itself = Sự tiến hóa của sự sống trên cạn cũng phức tạp như nguồn gốc của sự sống, lợi nhuận; là phương án chính xác nhất.
B. The discovery of microfossils supports the traditional view of how terrestrial life evolved = Việc phát hiện ra vi cổ ủng hộ quan điểm truyền thống của cuộc sống về việc cuộc sống trên mặt đất phát triển như thế nào.
Việc phát hiện ra vi cổ không ủng hộ quan điểm truyền thống mà phản bác nó.
C. New species have appeared at the same rate over the course of the last 400 million years = Nhiều loài mới đã xuất hiện ở tốc độ tương tự trong quá trình của 400 triệu năm trước.
Không có thông tin như vậy trong bài.
D. The technology used by paleontologists is too primitive to make accurate determinations about ages of fossils = Công nghệ được sử dụng bởi các nhà khảo cổ là quá thô sơ để đưa ra quyết định chính xác về tuổi của hóa thạch.
Không có thông tin như vậy trong bài.
Nhà sách VIETJACK:
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