tailieunhanh - Đề thi thử Đại học môn tiếng Anh - Đề số 11

Tài liệu đề thi thử Đại học môn Anh năm 2013 khối D, với tài liệu tham khảo này các bạn có thể luyện tập để tổng hợp lại kiến thức đã học, chuẩn bị hành trang bước vào kỳ thi tuyển sinh sắp tới. | The most common type of fog, radiation fog, forms at night, when moist air near the ground loses warmth through radiation on a clear night. This type of fog often occurs in valleys, such as California's San Joaquin Valley. Another common type, advection fog, results from the movement of warm, wet air over cold ground. The air loses temperature to the ground and condensation sets in. This type of fog often occurs along the California coast and the shores of the Great Lakes. Advection fog also forms when air associated with a warm ocean current blows across the surface of a cold current. The thick fogs of the Grand Banks of Newfoundland, Canada, are largely of this origin; because here the Labrador Current comes in contact with the warm Gulf Stream. Two other types of fog are somewhat more unusual. Frontal fog occurs when two fronts of different temperatures meet, and rain from the warm front falls into the colder one, saturating the air. Steam fog appears when cold air picks up moisture by moving other warmer water.

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13    158    1    26-12-2024