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Câu hỏi: Read the following passage and mark the letter A,B, C or Don your answer sheet to indicate the correct answer to each of the questions.
Butterflies are among the most extensively studied insectsan estimated 90 percent of the world's species have scientific names. As a consequence, they are perhaps the best group of insects for examining patterns of terrestrial biotic diversity and distribution. Butterflies also have a favorable image with the general public.
Hence, they are an excellent group for communicating information on science and conservation issues such as diversity. Perhaps the aspect of butterfly diversity that has received the most attention over the past century is the striking difference in species richness between tropical and temperate regions. For example, in 1875 one biologist pointed out the diversity of butterflies in the Amazon when he mentioned that about 700 species were found within an hour's walk, whereas the total number found on the British islands did not exceed 66, and the whole of Europe supported only 321. This early comparison of tropical and temperate butterfly richness has been well confirmed. A general theory of diversity would have to predict not only this difference between temperate and tropical zones, but also patterns within each region, and how these patterns vary among different animal and plant groups.
However, for butterflies, variation of species richness within temperate or tropical regions, rather man between them, is poorly understood. Indeed, comparisons of numbers of species among the Amazon basin, tropical Asia, and Africa are still mostly "personal communication" citations, even for vertebrates, In other words, unlike comparison between temperate and
tropical areas, these patterns are still in the documentation phase. In documenting geographical variation in butterfly diversity, some arbitrary, practical decisions are made. Diversity, number of species, and species richness are used synonymously; little is known about the evenness of butterfly distribution. The New World butterflies make up the preponderance of examples because they are the most familiar species. It is hoped that by focusing on them, the errors generated by imperfect and incomplete taxonomy will be minimized.
Which aspect of butterflies does the passage mainly discuss_____________
A. their physical characteristics
B. their adaption to different habitats
C. their names
D. their variety
Butterflies are among the most extensively studied insectsan estimated 90 percent of the world's species have scientific names. As a consequence, they are perhaps the best group of insects for examining patterns of terrestrial biotic diversity and distribution. Butterflies also have a favorable image with the general public.
Hence, they are an excellent group for communicating information on science and conservation issues such as diversity. Perhaps the aspect of butterfly diversity that has received the most attention over the past century is the striking difference in species richness between tropical and temperate regions. For example, in 1875 one biologist pointed out the diversity of butterflies in the Amazon when he mentioned that about 700 species were found within an hour's walk, whereas the total number found on the British islands did not exceed 66, and the whole of Europe supported only 321. This early comparison of tropical and temperate butterfly richness has been well confirmed. A general theory of diversity would have to predict not only this difference between temperate and tropical zones, but also patterns within each region, and how these patterns vary among different animal and plant groups.
However, for butterflies, variation of species richness within temperate or tropical regions, rather man between them, is poorly understood. Indeed, comparisons of numbers of species among the Amazon basin, tropical Asia, and Africa are still mostly "personal communication" citations, even for vertebrates, In other words, unlike comparison between temperate and
tropical areas, these patterns are still in the documentation phase. In documenting geographical variation in butterfly diversity, some arbitrary, practical decisions are made. Diversity, number of species, and species richness are used synonymously; little is known about the evenness of butterfly distribution. The New World butterflies make up the preponderance of examples because they are the most familiar species. It is hoped that by focusing on them, the errors generated by imperfect and incomplete taxonomy will be minimized.
Which aspect of butterflies does the passage mainly discuss_____________
A. their physical characteristics
B. their adaption to different habitats
C. their names
D. their variety
Dịch câu hỏi: Những khía cạnh của bướm mà đoạn văn chủ yếu thảo luận?
Butterflies are among the most extensively studied insects—an estimated 90 percent of the world's species have scientific names. As a consequence, they are perhaps the best group of insects for examining patterns of terrestrial biotic diversity and distribution: Bướm là một trong những loài côn trùng được nghiên cứu rộng rãi nhất, ước tính 90% các loài trên thế giới có tên khoa học. Kết quả là, chúng có lẽ là nhóm côn trùng tốt nhất để kiểm tra các mô hình phần bố và phân bố sinh học trên cạn.
Đoạn trích cho thấy nội dung của đoạn văn chủ yếu thảo luận về sự đa dạng của bướm, chọn D là hợp lý.
A.đặc điểm thể chất của chúng
B. sự thích của chúng đối với các môi trường khác nhau
C. tên của chúng
D. sự đa dạng của chúng
Butterflies are among the most extensively studied insects—an estimated 90 percent of the world's species have scientific names. As a consequence, they are perhaps the best group of insects for examining patterns of terrestrial biotic diversity and distribution: Bướm là một trong những loài côn trùng được nghiên cứu rộng rãi nhất, ước tính 90% các loài trên thế giới có tên khoa học. Kết quả là, chúng có lẽ là nhóm côn trùng tốt nhất để kiểm tra các mô hình phần bố và phân bố sinh học trên cạn.
Đoạn trích cho thấy nội dung của đoạn văn chủ yếu thảo luận về sự đa dạng của bướm, chọn D là hợp lý.
A.đặc điểm thể chất của chúng
B. sự thích của chúng đối với các môi trường khác nhau
C. tên của chúng
D. sự đa dạng của chúng
Đáp án D.