Câu hỏi:
02/04/2020 260Read 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:The author mentions the extinction of the dinosaurs in the 2nd paragraph to emphasize that
Đáp án chính xác
Câu hỏi trong đề:
30 đề thi thử thpt quốc gia tiếng anh năm 2020 cực hay có lời giải !!
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).
Quảng cáo
Trả lời:
Giải bởi Vietjack
Đáp án C
Kiến thức: Đọc hiểu
Giải thích:
Tác giả đề cập đến sự tuyệt chủng của khủng long ở đoạn 2 để nhấn mạnh rằng
A. nguyên nhân gây ra sự tuyệt chủng của loài khủng long chưa được biết đến
B. hành động của con người không thể ngăn chặn quá trình không thể đảo ngược tuyệt chủng của một loài 
C. không phải tất cả sự tuyệt chủng hàng loạt đều do hoạt động của con người gây ra
D. khí hậu Trái Đất đã thay đổi đáng kể kể từ khi khủng long tuyệt chủng
Thông tin: 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.
Nhà sách VIETJACK:
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.
Xem đáp án »
02/04/2020
24,526
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.
Xem đáp án »
02/04/2020
24,460
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: “________”
Xem đáp án »
02/04/2020
19,581
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.
Xem đáp án »
02/04/2020
19,079
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!”
Xem đáp án »
02/04/2020
18,015
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.
Xem đáp án »
02/04/2020
16,637
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.
Xem đáp án »
02/04/2020
12,329
về câu hỏi!