托福单词记忆对于大多数托福考生来说是一大难点。托福词汇的学习需要放在文章语境中去记忆和理解。本文为大家带来托福词汇模拟练习精选试题(24)，希望对大家托福备考有所帮助。
231. Since the weight of the oxygen is always added, the weight of the products of combustion, including the evolved gases, would always be greater than the weight of the starting material.
The word "Since" is closest in meaning to which of following?
(A) later
(B) because
(C) during
(D) although
232. Iron production was revolutionized in the early eighteenth century when coke was first used instead of charcoal for refining iron ore.
The word "revolutionized" is closest in meaning to which of following?
(A) quickly started
(B) gradually opened
(C) dramatically changed
(D) carefully examined
233. Apart from its low cost, the appeal of iron as a building material lay in its strength, its resistance to fire, and its potential to span vast areas.
The word "appeal" is closest in meaning to which of following?
(A) adjustment
(B) assignment
(C) attraction
(D) attempt
234. Significantly, the use of exposed iron occurred mainly in the new building types spawned by the Industrial Revolution: in factories, warehouses, commercial offices, exhibition halls, and railroad stations, where its practical advantages far outweighed its lack of status.
The word "spawned" is closest in meaning to which of following?
(A) created
(B) maintained
(C) rejected
(D) exposed
235. Designers of the railroad stations of the new age explored the potential of iron, covering huge areas with spans that surpassed the great vaults of medieval hurches and cathedrals.
The word "surpassed" is closest in meaning to which of following?
(A) imitated
(B) exceeded
(C) approached
(D) included
236. Their composition is thought to be similar to that of Earth's iron core, and indeed they might have once made up the core of a large planetoid that disintegrated long ago.
The word "core" is closest in meaning to which of following?
(A) center
(B) surface
(C) mineral
(D) field
237. When meteorites fall on the continent, they are embedded in the moving ice sheets. At places where the glaciers move upward against mountain ranges, meteorites are left exposed on the surface.
The word "embedded" is closest in meaning to which of following?
(A) isolated
(B) encased
(C) enhanced
(D) enlarged
238. The pale, smooth desert plain provides a perfect backdrop for spotting meteorites, which are usually dark brown of black.
The word "spotting" is closest in meaning to which of following?
(A) removing
(B) identifying
(C) cooling
(D) falling
239. A pioneering set of experiments has been important in the revolution in our understanding of animal behavior-a revolution that eroded the behaviorist dogma that only humans have minds.
The word "dogma" is closest in meaning to which of following?
(A) evaluation
(B) proof
(C) intention
(D) belief
240. These experiments were designed to detect consciousness ---
The word "detect" is closest in meaning to which of following?
(A) imitate the behavior of
(B) provide a reason for
(C) discover the presence of
(D) report a need for
参考答案：B C C A B A B B D C
以上就是为大家整理的托福词汇模拟练习精选试题，考生可在复习中进行练习以提高自己的考试水平。若您想了解托福考试更多相关信息请关注前程百利。
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