Câu hỏi:
31/10/2023 609
Arid regions in the southwestern United States have become increasingly inviting playgrounds for the growing number of recreation seekers who own vehicles such as motorcycles or powered trail bikes and indulge in hill-climbing contests or in carving new trails in the desert. But recent scientific studies show that these off-road vehicles can cause damage to desert landscapes that has long-range effects on the area’s water-conserving characteristics and on the entire ecology, both plant and animal. Research by scientists in the western Mojave Desert in California revealed that the compaction of the sandy arid soil resulting from the passage of just one motorcycle markedly reduced the infiltration ability of the soil and created a stream of rain runoff water that eroded the hillside surface. In addition, the researchers discovered that the soil compaction caused by the off-road vehicles often killed native plant species and resulted in the invasion of different plant species within a few years. The native perennial species required many more years before they showed signs of returning. The scientists calculated that roughly a century would be required for the infiltration capacity of the Mojave soil to be restored after being compacted by vehicles.
What is the main topic of the passage?
Arid regions in the southwestern United States have become increasingly inviting playgrounds for the growing number of recreation seekers who own vehicles such as motorcycles or powered trail bikes and indulge in hill-climbing contests or in carving new trails in the desert. But recent scientific studies show that these off-road vehicles can cause damage to desert landscapes that has long-range effects on the area’s water-conserving characteristics and on the entire ecology, both plant and animal. Research by scientists in the western Mojave Desert in California revealed that the compaction of the sandy arid soil resulting from the passage of just one motorcycle markedly reduced the infiltration ability of the soil and created a stream of rain runoff water that eroded the hillside surface. In addition, the researchers discovered that the soil compaction caused by the off-road vehicles often killed native plant species and resulted in the invasion of different plant species within a few years. The native perennial species required many more years before they showed signs of returning. The scientists calculated that roughly a century would be required for the infiltration capacity of the Mojave soil to be restored after being compacted by vehicles.
What is the main topic of the passage?
Đáp án chính xác
Câu hỏi trong đề:
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Trả lời:
Giải bởi Vietjack
Đáp án A
Dựa vào thông tin được đề cập đến trong bài và câu “But recent scientific… plant and animal” → nội dung chính của đoạn văn nói về “Những vấn đề gây ra bởi những loại phương tiện giải trí” → chọn A
Câu hỏi cùng đoạn
Câu 2:
According to the passage, what is being damaged?
According to the passage, what is being damaged?
Đáp án chính xác
Lời giải của GV VietJack
Đáp án B
Dựa vào thông tin “… these off-road vehicles can cause damage to desert landscapes…” → quang cảnh sa mạc đang bị phá hủy
Câu 3:
According to the passage, the damage to plants is _______.
According to the passage, the damage to plants is _______.
Đáp án chính xác
Lời giải của GV VietJack
Đáp án C
Thông tin “…these off-road vehicles can cause damage to desert landscapes that has long-range effects on the area’s water-conserving characteristics and on the entire ecology, both plant and animal …” → sự phá hủy đến có tính kéo dài
Câu 4:
According to the passage, what happens when the soil is compacted?
According to the passage, what happens when the soil is compacted?
Đáp án chính xác
Lời giải của GV VietJack
Đáp án A
Thông tin trong bài “the compaction of the sandy arid soil resulting from the passage of just one motorcycle markedly reduced the infiltration ability of the soil and created a stream of rain runoff water that eroded the hillside surface” → rất ít nước sẽ được thấm vào đất khi đất bị lì chặt lại
Câu 5:
What is happening to the desert hillsides?
What is happening to the desert hillsides?
Đáp án chính xác
Lời giải của GV VietJack
Đáp án A
Thông tin “the compaction of the sandy arid soil resulting from the passage of just one motorcycle markedly reduced the infiltration ability of the soil and created a stream of rain runoff water that eroded the hillside surface” → đất trên những sườn đồi sa mạc đang bị sói mòn
Câu 6:
According to the passage, what is happening to native plants in these areas?
According to the passage, what is happening to native plants in these areas?
Đáp án chính xác
Lời giải của GV VietJack
Đáp án D
Dựa vào đoạn “the soil compaction caused by the off-road vehicles often killed native plant species” → những loài cây bản địa trong những khu vực này đang chết dần
Câu 7:
It can be inferred that which of the following people would probably be most alarmed by the scientists’ findings?
It can be inferred that which of the following people would probably be most alarmed by the scientists’ findings?
Đáp án chính xác
Lời giải của GV VietJack
Đáp án D
Câu hỏi: Có thể suy ra rằng những người nào sau đây có lẽ sẽ bị báo động nhất bởi những phát hiện của các nhà khoa học?
Historian: nhà sử học
Mapmaker: người vẽ địa đồ
Farmer: nông dân
Ecologist: nhà sinh thái học
Dựa vào nội dung của bài → đáp án D phù hợp nhất
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 2:
With which of the following topics is the passage primarily concerned?
With which of the following topics is the passage primarily concerned?
Xem đáp án »
31/10/2023
752
Câu 5:
Which of the following is closet in meaning to the word “particulars” in line 2?
Which of the following is closet in meaning to the word “particulars” in line 2?
Xem đáp án »
31/10/2023
450
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