Câu hỏi:
01/04/2020 525Read 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.
It’s a sound you will probably never hear, a sickened tree sending out a distress signal. But a group of scientists has heard the cries, and they think some insects also hear the trees and are drawn to them like vulture to a dying animal. Researchers with the US Department of
Agriculture’s Forest Service fastened sensors to the bark of drought-stricken trees clearly heard distress calls. According to one of the scientists, most parched trees transmit their plight in the 50-hertz to 50-kilohertz range. (The unaided human ear can detect no more than 20 kilohertz). Red oak, maple, white pine, and birch all make slightly different sounds in the form of vibrations at the surface of the wood.
The scientists think that the vibrations are created when the water columns inside tubes that run along the length of the tree break, a result of too little water following through them. These fractured columns send out distinctive vibration pattems. Because some insects communicate at ultrasonic frequencies, they may pick up the trees' vibration and attack the weakened trees. Researchers are now running tests with potted trees that have been deprived of water to see if the sound is what attracts the insects. “Water-stressed trees also smell differently from other trees, and they experience thermal changes, so insects could be responding to something other than sound”, one scientist said.
The word “plight” in paragraph 1 is closest in meaning to ________ .
Sách mới 2k7: Bộ 20 đề minh họa Toán, Lí, Hóa, Văn, Sử, Địa…. form chuẩn 2025 của Bộ giáo dục (chỉ từ 110k).
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Trả lời:
Đáp án A
Từ “plight” trong đoạn 1 gần nghĩa nhất với ________ .
A. condition (n): điều kiện, tình trạng
B. cry (n): tiếng khóc
C. need (n): nhu cầu
D. agony (n): sự đau khổ
plight (n): hoàn cảnh, trạng thái ≈ condition (n)
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Being well-dressed and punctual can help you create a good ________ on your interviewer
Câu 2:
It’s necessary for students to listen to their teacher ________.
Câu 3:
________ more carefully, he would not have had the accident yesterday.
Câu 5:
Mark the letter A, B, C, D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:
If you think carefully before making your decision, you will avoid to get into trouble later
Câu 6:
Mark the letter A, B, C or D on your answer sheet to indicate the best answerof each following questions.
Mr Pike is repairing the refrigerator in the kitchen at the moment
Câu 7:
I’m going ________ for a few days so don’t send me any more work.
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về câu hỏi!