- Tính tự sở hữu sửa chữa thay thế cho danh trường đoản cú “Ozone” (không đề nghị danh tự chỉ người) là “ITS” phải sai ở câu trả lời A.
Bạn đang xem: What is ozone?
Sửa lỗi: his => its
Tạm dịch: Ozone có nguồn gốc từ một trong những nguồn, nguồn đó là động cơ ô tô
Mark the letter A, B, C or D lớn indicate the correct answer to lớn each of the following questions
Last year, the company went _______ up after the one of its senior executives offered his resignation
Mark the letter A, B, C or D lớn indicate the correct answer lớn each of the following questions
The application form______to the university before May 31st.
Mark the letter A, B, C or D to indicate the correct answer to lớn each of the following questions
_______, they will have done their homework
Mark the letter A, B, C or D khổng lồ indicate the correct answer to lớn each of the following questions
Brain’s attitude _______ his work has always been very positive
Mark the letter A, B, C, or D lớn indicate the sentence that best combines each pair of sentences in the following questions
Jack dropped out of school at the age of 15. He now regrets it.
Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning lớn the underlined word(s) in each of the following questions
An indecisive commander is unlikely khổng lồ win the confidence of his men.
Mark the letter A, B, C or D to lớn indicate the correct answer to each of the following questions
Everyone was taken to hospital last night, _______?
Mark the letter A, B, C, or D to indicate the sentence that best completes each of the following exchanges
Two students are discussing their previous English class.
- Student 1. “I think the teacher should give us more exercises.”
- Student 2. “_______”
Mark the letter A, B, C or D to lớn indicate the correct answer to each of the following questions
_______ yesterday, we saw many deer
Read the following passage & mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each the numbered blanks
Speech is one of the most important (26) ______ of communicating. It consists of far more than just making noises. Khổng lồ talk & also to lớn be understood by (27) ______ people, we have to speak a language. That is, we have to use combinations of sounds that everyone agrees to lớn stand for a particular object or idea. Communication would be impossible it everyone made up their own language.
Learning a language properly is very (28) ______. The basic vocabulary of English is not very large, and only about 2,000 words are needed lớn speak it quite well. (29) ______ the more idea you can express, the more precise you can be about their exact meaning. Words are the main thing (30) ______ we use in communicating what we want lớn say. The way we say the words is also very important. Our tone of voice can express many emotions & show whether we are pleased or angry, for instance.
Điền vào ô 26
Mark the letter A, B, C, or D lớn indicate the sentence that best completes each of the following exchanges
Tom is in Ho bỏ ra Minh city & asks a passer-by the way khổng lồ the railway station.
- Tom: “Can you show me the way to lớn the railway station, please?”
- Passer-by: “_______”
Read the following passage & mark the letter A, B, C, or D khổng lồ indicate the answer to lớn each of the question
The concept of traffic-free shopping areas goes back a long time. During the Middle Ages, traffic- không tính tiền shopping areas known as souks were built in Middle Eastern countries to lớn allow people to shop in comfort và safety. As far back as 2,000 years ago, road traffic was banned from central Rome during the day khổng lồ allow for the không lấy phí movement of pedestrians, and was only allowed in at night when shops và markets had closed for the day.
The modern, traffic-free shopping street was born in Europe in the 1960s, when both city populations và car ownership increased rapidly. Dirty exhaust fumes from cars and the risks involved in crossing the road were beginning khổng lồ make shopping an unpleasant and dangerous experience. Many believed the time was right for experimenting with car-free streets, & shopping areas seemed the best place lớn start.
At first, there was resistance from shopkeepers. They believed that such a move would be bad for business. They argued that people would avoid streets if they were unable khổng lồ get lớn them in their cars. When the first streets in Europe were closed to traffic, there were even noisy demonstrations as many shopkeepers predicted they would thua kém customers.
However, research carried out afterwards in several European cities revealed some unexpected statistics. In Munich, Cologne và Hamburg, visitors khổng lồ shopping areas increased by 50 percent. On Copenhagen’s main shopping street, shopkeepers reported sales increases of 25-40 percent. Shopkeepers in Minneapolis, USA, were so impressed when they learnt this that they even offered to lớn pay for the construction và maintenance costs of their own traffic-free streets.
With the arrival of the traffic–free shopping street, many shops, especially those selling things lượt thích clothes, food and smaller luxury items, prospered. Unfortunately, it wasn’t good news for everyone, as shops selling furniture và larger electrical appliances actually saw their sales drops. Many of these were forced khổng lồ move elsewhere, away from the đô thị centre. Today they are a common feature on the outskirts of towns & cities, often situated in out- of-town retail zones with their own car parks và other local facilities.
Xem thêm: Cách tạo dáng chụp ảnh sang chảnh cực thần thái cho nàng
(Adapted from Complete IELTS Band 4-5 by Rawdon Wyatt)
What can be the best tittle of the passage?
Mark the letter A, B, C, or D khổng lồ indicate the sentence that is closest in meaning lớn each of the following questions
“You’d better work harder if you don’t want to lớn retake the exam!” the teacher said khổng lồ Jimmy.
Read the following passage and mark the letter A, B, C, or D to lớn indicate the answer lớn each of the question
The concept of traffic-free shopping areas goes back a long time. During the Middle Ages, traffic- không tính phí shopping areas known as souks were built in Middle Eastern countries khổng lồ allow people to shop in comfort and safety. As far back as 2,000 years ago, road traffic was banned from central Rome during the day to allow for the không tính tiền movement of pedestrians, & was only allowed in at night when shops and markets had closed for the day.
The modern, traffic-free shopping street was born in Europe in the 1960s, when both thành phố populations and car ownership increased rapidly. Dirty exhaust fumes from cars & the risks involved in crossing the road were beginning to lớn make shopping an unpleasant và dangerous experience. Many believed the time was right for experimenting with car-free streets, và shopping areas seemed the best place lớn start.
At first, there was resistance from shopkeepers. They believed that such a move would be bad for business. They argued that people would avoid streets if they were unable lớn get to lớn them in their cars. When the first streets in Europe were closed lớn traffic, there were even noisy demonstrations as many shopkeepers predicted they would thảm bại customers.
However, research carried out afterwards in several European cities revealed some unexpected statistics. In Munich, Cologne và Hamburg, visitors to shopping areas increased by 50 percent. On Copenhagen’s main shopping street, shopkeepers reported sales increases of 25-40 percent. Shopkeepers in Minneapolis, USA, were so impressed when they learnt this that they even offered to pay for the construction & maintenance costs of their own traffic-free streets.
With the arrival of the traffic–free shopping street, many shops, especially those selling things lượt thích clothes, food & smaller luxury items, prospered. Unfortunately, it wasn’t good news for everyone, as shops selling furniture and larger electrical appliances actually saw their sales drops. Many of these were forced lớn move elsewhere, away from the city centre. Today they are a common feature on the outskirts of towns & cities, often situated in out- of-town retail zones with their own oto parks & other local facilities.
Adapted from Complete IELTS Band 4-5 by Rawdon Wyatt)
Why was there resistance from shopkeepers?
Mark the letter A, B, C or D lớn indicate the correct answer to lớn each of the following questions
What is ozone and where is it in the atmosphere?
Ozone (O3) is a highly reactive gas composed of three oxygen atoms. It is both a natural & a man-made sản phẩm that occurs in the Earth"s upper atmosphere
(the stratosphere) & lower atmosphere (the troposphere). Depending on where it is in the atmosphere, ozone affects life on Earth in either good or bad ways.
Stratospheric ozone is formed naturally through the interaction of solar ultraviolet (UV) radiation with molecular oxygen (O2). The "ozone layer," approximately 6 through 30 miles above the Earth"s surface, reduces the amount of harmful UV radiation reaching the Earth"s surface.
Tropospheric or ground-level ozone – what we breathe – is formed primarily from photochemical reactions between two major classes of air pollutants, volatile organic compounds (VOC) & nitrogen oxides (NOx). These reactions have traditionally been viewed as depending upon the presence of heat and sunlight, resulting in higher ambient ozone concentrations in summer months. Within the last decade, however, high ozone concentrations have also been observed under specific circumstances in cold months, where a few high elevation areas in the Western U.S. With high levels of local VOC & NOx emissions have formed ozone when snow is on the ground & temperatures are near or below freezing. Ozone contributes to what we typically experience as "smog" or haze, which still occurs most frequently in the summertime, but can occur throughout the year in some southern & mountain regions.
Although some stratospheric ozone is transported into the troposphere, và some VOC và NOx occur naturally, the majority of ground-level ozone is the result of reactions of man-made VOC và NOx. Significant sources of VOC are chemical plants, gasoline pumps, oil-based paints, autobody shops, và print shops. Nitrogen oxides result primarily from high temperature combustion. Significant sources are power plants, industrial furnaces & boilers, and motor vehicles.
Are high ambient ozone concentrations found only in heavily urbanized areas?
Many people mistakenly believe that tropospheric ozone concentrations are high only in major urban areas, but high ambient ozone concentrations can and do occur anywhere. Ozone formation is not limited khổng lồ big cities like Los Angeles, Houston, Atlanta, and new york City. It is also formed in smaller cities lượt thích Raleigh, NC & Cincinnati, OH, và it is transported hundreds of miles downwind from where it is created khổng lồ affect ambient air quality in other urban và rural areas. Where ozone is formed, peak concentrations usually occur during afternoon hours, when sunlight is the most intense. However, areas downwind of major sources of VOC và NOx may experience ozone peaks in the afternoon & evening, after wind has carried ozone và its VOC & NOx precursors many miles from their sources. Thus, high ozone concentrations can occur in remote areas and at various times of day, including during the early evening or night.
Figure 1: U.S. Counties with high ozone concentrations in 2009. This map depicts ozone concentrations by U.S. County for 2009, showing where high ambient ozone concentrations were found in the continental United States. The map"s màu sắc key is based on the categories of the Air unique Index (AQI) (see Patient Exposure & the Air quality Index). All orange, red, & purple areas exceeded the 8-hour ambient air quality standard for ozone during 2009. The maps illustrates how likely it may be for a particular area lớn experience air chất lượng advisories for ozone.
How does atmospheric ozone affect human health?
Ozone has two properties of interest lớn human health. First, it absorbs UV light, reducing human exposure to harmful UV radiation that causes skin cancer và cataracts. Second, when inhaled, it reacts chemically with many biological molecules in the respiratory tract, leading khổng lồ a number of adverse health effects. This course addresses this second property.
