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Câu hỏi: Read 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
The first birds appeared during late Jurassic times. These birds are known from four very good skeletons, two incomplete skeletons, and an isolated feather, all from the Solnhofen limestone of Bavaria, Germany. This fine-grained rock, which is extensively quarried for lithographic stone, was evidently deposited in a shallow coral lagoon of a tropical sea, and flying vertebrates occasionally fell into the water and were buried by the fine limy mud, to be preserved with remarkable detail. In this way, the late Jurassic bird skeletons, which have been named Archaeopteryx, were fossilized. And not only were the bones preserved in these skeletons, but so also were imprints of the feathers. If the indications of feathers had not been preserved in association with Archaeopteryx, it is likely that these fossils would have been classified among the dinosaurs, for they show numerous theropod characteristics. Archaeopteryx were animals about the size of a crow, with an archeosaurian type of skull, a long neck, a compact body balanced on a pair of strong hind limbs, and a long tail. The forelimbs were enlarged and obviously functioned as wings.
Modern birds, who are the descendants of these early birds, are highly organized animals, with a constant body temperature and a very high rate of metabolism. In addition, they are remarkable for having evolved extraordinarily complex behavior patterns such as those of nesting and song, and the habit among many species of making long migrations from one continent to another and back each year.
Most birds also have very strong legs, which allows them to run or walk on the ground as well as to fly in the air. Indeed, some of the waterbirds, such as ducks and geese, have the distinction of being able to move around proficiently in the water, on land, and in the air, a range in natural locomotor ability that has never been attained by any other vertebrate.
Why does the author mention "a crow" in the passage?
A. to indicate the size of Archaeopteryx
B. to specify the age of the Archaeopteryx fossils
C. to explain the evolutionary history of Archaeopteryx
D. to demonstrate the superiority of the theropod to Archaeopteryx
The first birds appeared during late Jurassic times. These birds are known from four very good skeletons, two incomplete skeletons, and an isolated feather, all from the Solnhofen limestone of Bavaria, Germany. This fine-grained rock, which is extensively quarried for lithographic stone, was evidently deposited in a shallow coral lagoon of a tropical sea, and flying vertebrates occasionally fell into the water and were buried by the fine limy mud, to be preserved with remarkable detail. In this way, the late Jurassic bird skeletons, which have been named Archaeopteryx, were fossilized. And not only were the bones preserved in these skeletons, but so also were imprints of the feathers. If the indications of feathers had not been preserved in association with Archaeopteryx, it is likely that these fossils would have been classified among the dinosaurs, for they show numerous theropod characteristics. Archaeopteryx were animals about the size of a crow, with an archeosaurian type of skull, a long neck, a compact body balanced on a pair of strong hind limbs, and a long tail. The forelimbs were enlarged and obviously functioned as wings.
Modern birds, who are the descendants of these early birds, are highly organized animals, with a constant body temperature and a very high rate of metabolism. In addition, they are remarkable for having evolved extraordinarily complex behavior patterns such as those of nesting and song, and the habit among many species of making long migrations from one continent to another and back each year.
Most birds also have very strong legs, which allows them to run or walk on the ground as well as to fly in the air. Indeed, some of the waterbirds, such as ducks and geese, have the distinction of being able to move around proficiently in the water, on land, and in the air, a range in natural locomotor ability that has never been attained by any other vertebrate.
Why does the author mention "a crow" in the passage?
A. to indicate the size of Archaeopteryx
B. to specify the age of the Archaeopteryx fossils
C. to explain the evolutionary history of Archaeopteryx
D. to demonstrate the superiority of the theropod to Archaeopteryx
Tại sao tác giả đề cập đến "một con quạ" trong bài đọc?
A. để chỉ ra kích cỡ của chim thủy tổ
B. để chỉ ra tuổi của hóa thạch chim thủy tổ
U . . C. để giải thích lịch sử tiến hóa của chim thủy tổ, bạn sự
D. để cho thấy loài khủng long là bậc cao hơn so với chim thủy tổ
Dẫn chứng: Archaeopteryx were animals about the size of a crow, with an archeosaurian type of skill, a long neck, a compact body balanced on a pair of strong hind limbs, and a long tail. (Chim huy to là loài động vật có kích cỡ bằng con quạ, với một kiểu đầu kiểu archeosaurian, một cái có dài, một cơ thể rắn chắc được cân bằng nhờ cặp chân sau chắc khỏe và một cái đuôi dài)
A. để chỉ ra kích cỡ của chim thủy tổ
B. để chỉ ra tuổi của hóa thạch chim thủy tổ
U . . C. để giải thích lịch sử tiến hóa của chim thủy tổ, bạn sự
D. để cho thấy loài khủng long là bậc cao hơn so với chim thủy tổ
Dẫn chứng: Archaeopteryx were animals about the size of a crow, with an archeosaurian type of skill, a long neck, a compact body balanced on a pair of strong hind limbs, and a long tail. (Chim huy to là loài động vật có kích cỡ bằng con quạ, với một kiểu đầu kiểu archeosaurian, một cái có dài, một cơ thể rắn chắc được cân bằng nhờ cặp chân sau chắc khỏe và một cái đuôi dài)
Đáp án A.