Câu hỏi:
03/04/2020 629Read 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.
Pollution is a threat to many species on Earth, but sometimes it can cause species to thrive. Such is the case with Pfiesteria piscicida. A one-celled creature called a dinoflagellate, Pfiesteria inhabits warm coastal areas and river mouths, especially along the eastern United States. Although scientists have found evidence of Pfiesteria in 3,000-year-old sea floor sediments and dinoflagellates are thought to be one of the oldest life forms on earth, few people took notice of Pfiesteria.
Lately, however, blooms – or huge, dense populations – of Pfiesteria are appearing in coastal waters, and in such large concentrations the dinoflagellates become ruthless killers. The blooms emit powerful toxins that weaken and entrap fish that swim into the area. The toxins eventually cause the fish to develop large bleeding sores through which the tiny creatures attack, feasting on blood and flesh. Often the damage is astounding. During a 1991 fish kill, which was blamed on Pfiesteria on North Carolina’s Neuse River, nearly one billion fish died and bulldozers had to be brought in to clear the remains from the river. Of course, such events can have a devastating effect on commercially important fish, but that is just one way that Pfiesteria causes problems. The toxins it emits affect human skin in much the same way as they affect fish skin. Additionally, fisherman and others who have spent time near Pfiesteria blooms report that the toxins seem to get into the air, where once inhaled they affect the nervous system, causing severe headaches, blurred vision, nausea, breathing difficulty, short-term memory loss and even cognitive impairment.
For a while, it seemed that deadly Pfiesteria blooms were a threat only to North Carolina waters, but the problem seems to be spreading. More and more, conditions along the east coast seem to be favorable for Pfiesteria. Researchers suspect that pollutants such as animal waste from livestock operations, fertilizers washed from farmlands and waste water from mining operations have probably all combined to promote the growth of Pfiesteria in coastal waters.
Question:In which environment would you NOT expect a Pfiesteria bloom to develop?
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:
Trong môi trường nào mà bạn KHÔNG mong đợi sự phát triển của Pfiesteria?
A. một đầm lầy hút nước thải từ một trại nuôi lợn gần đó
B. một dòng sông gần mỏ đá
C. một hồ trên dãy núi mát mẻ có đầy cá
D. một dòng sông chảy qua vùng đất nông nghiệp phong phú
Dẫn chứng: Pfiesteria inhabits warm coastal areas and river mouths
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 sentence that is closest in meaning to each of the following questions.
I have never listened to jazz music before
Xem đáp án »
03/04/2020
38,550
Câu 2:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that need correction in each of the following questions
Alike light waves , microwaves may be reflected and concentrated elements.
Xem đáp án »
03/04/2020
34,714
Câu 3:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions
The 26th Annual Meeting of the Asia-Pacific Parliamentary Forum (APPF) ______ in Hanoi, our beautiful and peaceful capital city, from January 18th to 21st, 2018
Xem đáp án »
03/04/2020
31,803
Câu 4:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions
Could you ______ me a lift into town?
Xem đáp án »
03/04/2020
25,304
Câu 5:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that need correction in each of the following questions
Many hundred years ago , there were many villages and little towns in England.
Xem đáp án »
03/04/2020
23,218
Câu 6:
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.
Noisy as the hotel was, they stayed there.
Xem đáp án »
03/04/2020
16,537
Câu 7:
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
They didn’t have the right visas. They couldn’t legally re-enter Thailand.
Xem đáp án »
03/04/2020
16,425
Bình luận
🔥 Đề thi HOT:
-
30 đề thi THPT Quốc gia môn Tiếng Anh năm 2022 có lời giải (Đề 1)
-
20 Đề thi thử THPTQG môn Tiếng Anh cực hay có đáp án (Đề số 1)
-
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 1)
-
30 đề luyện thi Đại Học môn Tiếng Anh cực hay có lời giải (Đề số 1)
-
Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 1)
-
Tổng hợp đề thi thử tiếng anh thpt quốc gia (Đề số 1)
-
20 BỘ ĐỀ THI THỬ THPT QUỐC GIA LẦN 1 NĂM HỌC 2018 - 2019 MÔN: TIẾNG ANH(ĐỀ 16)
-
Tổng hợp đề thi thử THPTQG môn Tiếng Anh có đáp án (Đề số 1)
về câu hỏi!