Câu hỏi:
02/04/2020 351Read 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.
Biological diversity has become widely recognized as a critical conservation issue only in the past two decades. The rapid destruction of the tropical rain forests, which are the ecosystems with the highest known species diversity on Earth, has awakened people to the importance and fragility of biological diversity. The high rate of species extinctions in these environments is jolting, but it is important to recognize the significance of biological diversity in all ecosystems. As the human population continues to expand, it will negatively affect one after another of Earth’s ecosystems. In terrestrial ecosystems and in fringe marine ecosystems (such as wetlands), the most common problem is habitat destruction. In most situations, the result is irreversible. Now humans are beginning to destroy marine ecosystems through other types of activities, such as disposal and runoff of poisonous waste; in less than two centuries, by significantly reducing the variety of species on Earth, they have irrevocably redirected the course of evolution.
Certainly, there have been periods in Earth’s history when mass extinctions have occurred. The extinction of the dinosaurs was caused by some physical event, either climatic or cosmic. There have also been less dramatic extinctions, as when natural competition between species reached an extreme conclusion. Only 0.01 percent of the species that have lived on Earth have survived to the present, and it was largely chance that determined which species survived and which died out.
However, nothing has ever equaled the magnitude and speed with which the human species is altering the physical and chemical world and demolishing the environment. In fact, there is wide agreement that it is the rate of change humans are inflicting, even more than the changes themselves, that will lead to biological devastation. Life on Earth has continually been in flux as slow physical and chemical changes have occurred on Earth, but life needs time to adapt-time for migration and genetic adaptation within existing species and time for the proliferation of new genetic material and new species that may be able to survive in new environments.
Question:What does the passage mainly discuss?
Sách mới 2k7: 30 đề đánh giá năng lực DHQG Hà Nội, Tp. Hồ Chí Minh, BKHN 2025 mới nhất (600 trang - chỉ từ 160k).
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Trả lời:
Đáp án D
Kiến thức: Đọc hiểu
Giải thích:
Đoạn văn chủ yếu thảo luận gì?
A. Nguyên nhân của sự tuyệt chủng khủng long
B. Sự đa dạng của các loài được tìm thấy trong rừng mưa nhiệt đới
C. Thời gian cần thiết để các loài thích ứng với môi trường mới
D. Tác động của các hoạt động con người đến các hệ sinh thái của trái đất
Đã bán 152
Đã bán 114
Đã bán 132
Đã bán 47
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
The teacher recommended that Tom_____his composition as soon as possible.
Câu 2:
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
Mr.Smith is a professor. His car was stolen yesterday.
Câu 3:
Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.
- Roger: “Wow! You look terrific in that new dress!” - Tina: “________”
Câu 4:
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.
The office furniture that was ordered last month have just arrived, but we’re not sure whether the manager likes it.
Câu 5:
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
The captain said to his men: “Abandon the ship immediately!”
Câu 6:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
I’m sorry I haven’t got any money. I’ve______my wallet at home.
Câu 7:
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.
Miranda still has trauma from the tragic accident, that took away her closest friend.
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