Đề thi thử tốt nghiệp THPT Quốc gia Lần 1 môn Tiếng Anh - Năm 2021 - Mã đề 102 (Có đáp án)

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SỞ GD&ĐT VĨNH PHÚC

(Đề thi có 05 trang)

KỲ THI THỬ TỐT NGHIỆP THPT QUỐC GIA NĂM 2021 – LẦN 1

Bài thi: NGOẠI NGỮ, Môn thi: TIẾNG ANH Thời gian làm bài: 60 phút, không kể thời gian phát đề

Họ, tên thí sinh: ……………………………….., Mã đề: 102 Số báo danh: ………………………………..

Read the following passage and mark the letter A, B, C or D on you answer sheet to indicate the correct answer to each of the questions.

Glaciers are large masses of ice on land that show evidence of past or present movement. They grow by the gradual transformation of snow into glacier ice. A fresh snowfall is a fluffy mass of loosely packed snowflakes, small delicate ice crystals grown in the atmosphere. As the snow ages on the ground for weeks or months, the crystals shrink and become more compact to form firm, a much whole mass becomes squeezed together into a more dense form, granular snow. As new snow falls and buries the older snow, the layers of granular snow further compact to form firm, a much denser kind of snow, usually a year or more old, which has little pore space. Further burial and slow cementation- a process by which crystals become bound together in a mosaic of intergrown ice crystals- finally produce solid glacial ice. In this process of recrystallization, the growth of new crystals at the expense of old ones, the percentage of air is reduced from about 90 percent for snowflakes to less than 20 percent for glacier ice. The whole process may take as little as a few years, but more likely ten or twenty years or longer. The snow is usually many meters deep by the time the lower layers are converted into ice.

In cold glaciers those formed in the coldest regions of the Earth, the entire mass of ice is at temperatures below the melting point and no free water exists. In temperate glaciers, the ice is at the melting point at every pressure level within the glaciers, and free water is present as small drops or as larger accumulations, in tunnels within or beneath the ice. Formation of a glacier is complete when ice has accumulated to a thickness (and thus weight) sufficient to make it move slowly under pressure, in much the same way that solid rock deep within the Earth can change shape without breaking. Once that point is reached, the ice flows downhill, either as a tongue of ice filling a valley or as thick ice cap that flows out in directions from the highest central area where the most snow accumulates. The up down leads to the eventual melting of ice. Question 1. Which of the following does the passage mainly discuss?

A. Damage from glaciers B. The location of glaciers C. The effect of glaciers on climate D. Glacier formation Question 2. Which of the following will cause density within the glacier to increase?

A. Pressure from the weight of new snow B. Increased water and air content C. Long periods of darkness and temperature variations D. Movement of the glacier Question 3. The word "bound” in paragraph 1 is closest in meaning to ________.

A. chosen B. covered C. held D. planned Question 4. The word "converted” in paragraph 1 is closest in meaning to ________.

A. delayed B. changed C. promoted D. dissolved Question 5. In temperate glaciers, where is water found?

A. In a thin layer below the firm B. In pools at various depths C. Only near the surface D. In tunnels Question 6. The word "that" in paragraph 2 refers to ________.

A. thick ice cap B. tongue of ice C. solid rock D. valley Question 7. It can be inferred from the last paragraph that a glacier ________.

A. is too cold to be thoroughly studied

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