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Câu hỏi:
Which statement is TRUE according to the last paragraphs?
- A. After over 2 months investigated, reindeer populations were reported to decrease because of the increase of unwanted plant species.
- B. Nearly a half of reindeer populations have reduced in the last two decades.
- C. Beside the scarcity of food, diseases are also the cause of reindeer’s mortality.
- D. The average temperature of the Earth has increased by 3.7C since 1990.
Lời giải tham khảo:
Đáp án đúng: C
Theo những đoạn văn cuối, phát biểu nào sau đây là đúng?
A. Sau hơn 2 tháng nghiên cứu, số lượng tuần lộc được báo cáo là suy giảm vì sự tăng lên của các loài thực vật không mong muốn.
B. Gần một nửa số lượng tuần lộc đã suy giảm trong hai thập kỉ qua.
C. Bên cạnh sự khan hiếm về thức ăn, bệnh tật cũng là nguyên nhân gây ra cái chết của tuần lộc.
D. Nhiệt độ trung bình của Trái Đất đã tăng 3.7C kể từ năm 1990.
Căn cứ vào các thông tin sau:
A team of three scientists spent 10 weeks investigating population of the Svalbard reindeer earlier this year. Researchers warned the decline of reindeer would cause unwanted plant species, currently kept in check by the animals’ grazing, to spread across Arctic ecosystems in Europe, Asia and North America.
Arctic reindeer and caribou populations have declined 56 per cent in the last two decades, a report by the National Oceanic and Atmospheric Administration said last year. The report said food security was partly to blame for falling herd numbers, while warmer summers could also put the animals at greater risk of diseases spread by flies and parasites.
The average temperature in Longyearbyen has risen by 3.7C since 1900, more than three times the global average increase of about 1C.
(Một nhóm 3 nhà khoa học đã mất 10 tuần nghiên cứu số lượng loài tuần lộc Svalbard hồi đầu năm nay. Những nhà nghiên cứu cảnh báo rằng sự suy giảm của loài tuần lộc có thể khiến những loài thực vật không mong muốn, thường bị kìm hãm bởi các loài động vật ăn cỏ, lan rộng sang hệ sinh thái Bắc Cực ở Châu Âu, Châu Á và Bắc Mĩ.
Số lượng loài tuần lộc caribu và tuần lộc Bắc cực đã giảm 56% trong 2 thập kỉ qua, theo một báo cáo năm trước của Cơ quan Khí quyển và Đại dương Quốc gia. Báo cáo này cho biết an ninh lương thực chỉ chịu trách nhiệm một phần cho việc suy giảm các loài ăn cỏ, trong khi đó các mùa hè nóng hơn cũng khiến những loài vật này gặp nhiều nguy cơ mắc bệnh truyền nhiễm do ruồi và kí sinh trùng gây ra.
Nhiệt độ trung bình ở Longyearbyen đã tăng 3.7C kể từ năm 1990, nhiều hơn gấp 3 lần so với mức tăng nhiệt độ trung bình toàn cầu là chỉ khoảng 1C).
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