Thứ sáu, 22/11/2024
IMG-LOGO

Câu hỏi:

16/07/2024 104

Read 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:
According to the paragraph 2, what will NOT happen if one breathes the toxic air?

A. vomiting

B. visual impairments

C. circulatory difficulty

Đáp án chính xác

D. terrible headaches

Trả lời:

verified Giải bởi Vietjack

Đáp án C

Kiến thức: đọc hiểu

Giải thích:

Theo đoạn 2, điều gì sẽ không xảy ra nếu ai đó hít phải không khí độc hại?

A. nôn mửa     B. hại thị giác    C. khó khăn về tuần hoàn   D. đau đầu khủng khiếp

Dẫn  chứng:  where  once  inhaled  they  affect  the  nervous  system,  causing  severe  headaches,  blurred  vision, nausea, breathing difficulty, short-term memory loss and even cognitive impairment.

Câu trả lời này có hữu ích không?

0

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

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 » 18/06/2021 1,826

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
Many hundred years ago , there were many villages and little towns in England.

Xem đáp án » 18/06/2021 1,724

Câu 3:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions
The lack of family support and the committee’s concerns around the design of the proposed statue of the former British Prime Minister, Margaret Thatcher, outside UK Parliament were the key determining factors in ________ this application.

Xem đáp án » 18/06/2021 1,506

Câu 4:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions
Britain’s Prime Minister Theresa May was the first world leader ______ Trump at the White House after his inauguration last year.

Xem đáp án » 18/06/2021 1,202

Câu 5:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions
Bob was absent; he _____ sick again.

Xem đáp án » 18/06/2021 1,021

Câu 6:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions
I think we’ve come in for a lot of _____ about the impatience of some shop assistants.

Xem đáp án » 18/06/2021 687

Câu 7:

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 » 18/06/2021 675

Câu 8:

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 » 18/06/2021 584

Câu 9:

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 » 18/06/2021 517

Câu 10:

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 » 18/06/2021 484

Câu 11:

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 » 18/06/2021 465

Câu 12:

Read 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.

 Although the “lie detectors” are being used by governments, police departments, and businesses that all want guaranteed ways of detecting the truth, the results are not always accurate. Lie detectors are properly called emotion detectors, for their aim is to measure bodily changes that contradict what a person says. The polygraph machine records changes in heart rate, breathing, blood pressure, and the electrical activity of the skin (galvanic skin response, or GSR). In the first part of the polygraph test, you are electronically connected to the machine and asked a few neutral questions (“What is your name?”, “Where do you live?”). Your physical reactions serve as the standard (baseline) for evaluating what comes next. Then you are asked a few critical questions among the neutral ones (“When did you rob the bank?”). The assumption is that if you are guilty, your body will reveal the truth, even if you try to deny it. Your heart rate, respiration, and GSR will change abruptly as you respond to the incriminating questions.

 That is the theory; but psychologists have found that lie detectors are simply not reliable. Since most physical changes are the same across all emotions, machines cannot tell whether you are feeling guilty, angry, nervous, thrilled, or revved up form an exciting day. Innocent people may be tense and nervous about the whole procedure. They may react physiologically to a certain word (“bank”) not because they robbed it, but because they recently bounced a check. In either case the machine will record a “lie”. The reverse mistake is also common. Some practiced liars can lie without flinching, and others learn to beat the machine by tensing muscles or thinking about an exciting experience during neutral questions.
Question:
What is the main idea of this passage?

Xem đáp án » 18/06/2021 426

Câu 13:

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions
If we use robots instead of humans, many people may be out of work

Xem đáp án » 18/06/2021 353

Câu 14:

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.

Mai and Lan are talking about Mai’s new house.

- Lan: “What a lovely house you have!”

- Mai: “________________”

Xem đáp án » 18/06/2021 333

Câu 15:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions
Vietnam reached the semi-finals of the AFC U23 Championship 2018 with a penalty shootout win _________ Iraq on Saturday, January 20th , 2018.

Xem đáp án » 18/06/2021 320

Câu hỏi mới nhất

Xem thêm »
Xem thêm »