Câu hỏi:
07/04/2020 270Read 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.
The word “entombed” in lime 22 is closest in meaning to
Đáp án chính xác
Câu hỏi trong đề:
20 Đề thi thử Tiếng Anh năm 2020 chuẩn cấu trúc bộ giáo dục !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
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Trả lời:
Giải bởi Vietjack
Đáp án B
Giải thích: Entombed (v) = bị chôn vùi
Trapped (v) = mắc kẹt, nhốt
Dịch nghĩa: 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. = Mặc dù chúng đã được chôn vùi trong các hòn đá trong hàng trăm triệu năm, rất nhiều các hóa thạch bao gồm các bộ hài cốt hữu cơ của sinh vật.
Như vậy phương án B. trapped là phương án có nghĩa sát nhất.
A. crushed (v) = bị nghiền nát
C. produced (v) = được sản xuất
D. excavated (v) = được khai quật
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
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Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
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