Reading Comprehension TOEFL Exams 145

TOEFL Exams: Reading Comprehension - Lesson 145 (Đọc hiểu - TOEFL - Bài 145) 

 

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Fog occurs when damp air above the surface of the earth is cooled to the point at which it condenses. Of the two types of fog, advection fog occurs along the ocean coast or near rivers or lakes. This type of fast-moving fog, which may cover vast areas, occurs when warm 5 winds blow across a cold surface of land or water. In this collision of heat and cold, the warm air is cooled to the point at which the water vapor condenses into fog. Radiation fog, quite different from advection fog, is immobile cloud-like moisture generally found hovering over wintertime valleys. It occurs on clear nights when the earth's 10 warmth escapes into the upper atmosphere.

 

1. According to the passage, fog is found when wetness in the air is
(A) vaporized
(B) cooled
(C) dampened
(D) heated
2. According to the passage, advection fog is found
(A) in valleys
(B) in the ocean
(C) near bodies of water
(D) only in small, enclosed areas
3. In the passage, radiation fog is said to be
(A) similar to advection fog
(B) found in coastal areas
(C) fast-moving
(D) trapped moisture hanging over inland valleys
4. According to the passage, which of the following statements about fog is true?
(A) Advection fog is caused when cold winds blow across a heated land surface.
(B) Advection fog is the type of fog that occurs in small valleys on clear nights.
(C) Radiation fog occurs when the cooled atmosphere meets with heat from the earth.
(D) Radiation fog generally moves quickly across vast areas of land.
5. The author's purpose in this passage is to
(A) explain the different types of fog
(B) describe where different types of fog are found
(C) discuss advection fog
(D) give a scientific description of various types of precipitation