Thunderstorms, with their jagged bu

Thunderstorms, with their jagged bursts of lightning and roaring thunder, are actually one of
nature's primary mechanisms for transferring heat from the surface of the earth into the atmosphere.
A thunderstorm starts when low-lying pockets of warm air from the surface of the earth begin to rise.
Line The pockets of warm air float upward through the air above that is both cooler and heavier. The rising
(5) pockets cool as their pressure decreases, and their latent heat is released above the condensation line
through the formation of cumulus clouds.
What will happen with these clouds depends on the temperature of the atmosphere. In winter,
the air temperature differential between higher and lower altitudes is not extremely great, and the
temperature of the rising air mass drops more slowly. During these colder months, the atmosphere,
(10) therefore, tends to remain rather stable. In summer, however, when there is a high accumulation of
heat near the earth's surface, in direct contrast to the considerably colder air higher up, the
temperature differential between higher and lower altitudes is much more pronounced. As warm air
rises in this type of environment, the temperature drops much more rapidly than it does in winter;
when the temperature drops more than four degrees Fahrenheit per thousand feet of altitude,
(15) cumulus clouds aggregate into a single massive cumulonimbus cloud, or thunderhead.
In isolation, a single thunderstorm is an impressive but fairly benign way for Mother Earth to
defuse trapped heat from her surface; thunderstorms, however, can appear in concert, and the
resulting show, while extremely impressive, can also prove extraordinarily destructive. When there is
a large-scale colusión between cold air and warm air masses during the summer months, a squall
(20) line, or series of thunderheads, may develop. It is common for a squall line to begin when an
advancing cold front meets up with and forces itself under a layer of warm and moist air, creating a
line of thunderstorms that races forward at speeds of approximately forty miles per hour. A squall
line, which can be hundreds of miles long and can contain fifty distinct thunderheads, is a
magnificent forcé of nature with incredible potential for destruction. Within the squall line, often
(25) near its southern end, can be found supercells, long-lived rotating storms of exceptional strength that
serve as the source of tornadoes.
41. The topic of the passage is
(A) the development of thunderstorms
and squall lines
(B) the devastating effects of tornadoes
(C) cumulus and cumulonimbus clouds
(D) the power of tornadoes
42. "Mechanisms" in line 2 are most likely
(A)
(B)
(C)
(D)
machines
motions
methods
materials
43. It can be inferred from the passage that, in
summer,
(A) there is not a great temperature
differential between higher and
lower altitudes
(B) the greater temperature differential
between higher and lower altitudes
makes thunderstorms more likely to
occur
(C) there is not much cold air higher up
in the atmosphere
(D) the temperature of rising air drops
more slowly than it does in winter
44. The word "benign" in line 16 is closest in
meaning to
(A) harmless
(B) beneficial
(C) ferocious
(D) spectacular
GO ON TO THE NEXT PAGE
COMPLETE TEST ONE 401A3A3A3A3A3A3A 3
45. The expression "in concert" in line 17
could best be replaced by
(A) as a choras
(B) with other musicians
(C) as a cluster
(D) in a performance
46. According to the passage, a "squall line" in
line 20 is
(A) a lengthy cold front
(B) a serious thunderstorm
(C) a line of supercells
(D) a string of thunderheads
47. The pronoun "itself" in line 21 refers to
(A) a large-scale colusión
(B) a squall line
(C) an advancing cold front
(D) a layer of warm and moist air
48. All of the following are mentioned in the
passage about supercells EXCEPT that
they
(A) are of short duration
(B) have circling winds
(C) have extraordinary power
(D) can give birth to tornadoes
49. This reading would most probably be
assigned in which of the following
courses?
(A) Geology
(B) Meteorology
(C) Marine Biology
(D) Chemistry
50. The paragraph following the passage most
likely discusses
(A) the lightning and thunder associated
with thunderstorms
(B) various types of cloud formations
(C) the forces that contribute to the
formation of squall lines
(D) the development of tornadoes within
supercells

Kết quả (Việt) 1:

Trời, với của bursts gồ ghề của sét và sấm sét, đang bùng thực sự là một trongbản chất của chính cơ chế cho chuyển giao nhiệt từ bề mặt của trái đất vào khí quyển.Trời Ðẹp bắt đầu khi thấp túi không khí ấm áp từ bề mặt của trái đất bắt đầu tăng lên.Dòng túi không khí ấm áp nổi lên trên qua không khí ở trên mà là mát và nặng hơn. Tăng(5) túi mát mẻ như áp lực của họ giảm, và nhiệt ẩn của họ được phát hành trên đường ngưng tụthông qua sự hình thành của mây tích.Điều gì sẽ xảy ra với những đám mây phụ thuộc vào nhiệt độ của khí quyển. Vào mùa đông,nhiệt độ không khí khác biệt giữa độ cao cao hơn và thấp hơn không phải là rất lớn, và cácnhiệt độ của khối khí tăng giảm chậm hơn. Trong những tháng lạnh hơn, khí quyển,(10) do đó, có xu hướng để vẫn khá ổn định. Vào mùa hè, Tuy nhiên, khi có một tích lũy caonhiệt gần bề mặt của trái đất, trực tiếp trái ngược với không khí lạnh hơn đáng kể cao hơn lên, cácnhiệt độ chênh lệch giữa độ cao cao hơn và thấp hơn được phát âm. Như ấm không khítăng trong loại môi trường, giảm nhiệt độ hơn nhanh hơn trong mùa đông;Khi nhiệt độ giảm hơn bốn độ f cho mỗi nghìn feet của độ cao,(15) mây tích hợp vào một mây tích lớn duy nhất, hoặc thunderhead.In isolation, a single thunderstorm is an impressive but fairly benign way for Mother Earth todefuse trapped heat from her surface; thunderstorms, however, can appear in concert, and theresulting show, while extremely impressive, can also prove extraordinarily destructive. When there isa large-scale colusión between cold air and warm air masses during the summer months, a squall(20) line, or series of thunderheads, may develop. It is common for a squall line to begin when anadvancing cold front meets up with and forces itself under a layer of warm and moist air, creating aline of thunderstorms that races forward at speeds of approximately forty miles per hour. A squallline, which can be hundreds of miles long and can contain fifty distinct thunderheads, is amagnificent forcé of nature with incredible potential for destruction. Within the squall line, often(25) near its southern end, can be found supercells, long-lived rotating storms of exceptional strength thatserve as the source of tornadoes.41. The topic of the passage is(A) the development of thunderstormsand squall lines(B) the devastating effects of tornadoes(C) cumulus and cumulonimbus clouds(D) the power of tornadoes42. "Mechanisms" in line 2 are most likely(A)(B)(C)(D)machinesmotionsmethodsmaterials43. It can be inferred from the passage that, insummer,(A) there is not a great temperaturedifferential between higher andlower altitudes(B) the greater temperature differentialbetween higher and lower altitudesmakes thunderstorms more likely tooccur(C) there is not much cold air higher upin the atmosphere(D) the temperature of rising air dropsmore slowly than it does in winter44. The word "benign" in line 16 is closest inmeaning to(A) harmless(B) beneficial(C) ferocious(D) spectacularGO ON TO THE NEXT PAGECOMPLETE TEST ONE 401A3A3A3A3A3A3A 345. The expression "in concert" in line 17could best be replaced by(A) as a choras(B) with other musicians(C) as a cluster(D) in a performance46. According to the passage, a "squall line" inline 20 is(A) a lengthy cold front(B) a serious thunderstorm(C) a line of supercells(D) a string of thunderheads47. The pronoun "itself" in line 21 refers to(A) a large-scale colusión(B) a squall line(C) an advancing cold front(D) a layer of warm and moist air48. All of the following are mentioned in thepassage about supercells EXCEPT thatthey(A) are of short duration(B) have circling winds(C) have extraordinary power(D) can give birth to tornadoes49. This reading would most probably beassigned in which of the followingcourses?(A) Geology(B) Meteorology(C) Marine Biology(D) Chemistry50. The paragraph following the passage mostlikely discusses(A) the lightning and thunder associatedwith thunderstorms(B) various types of cloud formations(C) the forces that contribute to theformation of squall lines(D) the development of tornadoes withinsupercells