托福阅读的积累练习中,对于阅读原文的不断积累,可以帮助我们更全面的来提升阅读能力。因此在实际的复习中,这种练习方式,对于大家来说,也是重要的练习方法。那么具体的这些原文内容是什么?下面小编为大家整理了详细的内容,供大家参考!

  PASSAGE 2

  The geology of the Earth's surface is dominated by the particular properties of water. Presenton Earth in solid, liquid, and gaseous states, water is exceptionally reactive. It dissolves,transports, and precipitates many chemical compounds and is constantly modifying the face ofthe Earth.

  Evaporated from the oceans, water vapor forms clouds, some of which are transported bywind over the continents. Condensation from the clouds provides the essential agent ofcontinental erosion: rain. Precipitated onto the ground, the water trickles down to form brooks,streams, and rivers, constituting what are called the hydrographic network. This immensepolarized network channels the water toward a single receptacle: an ocean. Gravity dominatesthis entire step in the cycle because water tends to minimize its potential energy by running fromhigh altitudes toward the reference point, that is, sea level.

  The rate at which a molecule of water passes though the cycle is not random but is a measureof the relative size of the various reservoirs. If we define residence time as the average time for awater molecule to pass through one of the three reservoirs — atmosphere, continent, and ocean— we see that the times are very different. A water molecule stays, on average, eleven days inthe atmosphere, one hundred years on a continent and forty thousand years in the ocean. Thislast figure shows the importance of the ocean as the principal reservoir of the hydrosphere butalso the rapidity of water transport on the continents.

  A vast chemical separation process takes places during the flow of water over the continents.Soluble ions such as calcium, sodium, potassium, and some magnesium are dissolved andtransported. Insoluble ions such as aluminum, iron, and silicon stay where they are and form thethin, fertile skin of soil on which vegetation can grow. Sometimes soils are destroyed andtransported mechanically during flooding. The erosion of the continents thus results from twoclosely linked and interdependent processes, chemical erosion and mechanical erosion. Theirrespective interactions and efficiency depend on different factors.

  1. The word modifying in line 4 is closest in meaning to

  (A) changing

  (B) traveling

  (C) describing

  (D) destroying

  2. The word which in line 5 refers to

  (A) clouds

  (B) oceans

  (C) continents

  (D) compounds

  3. According to the passage , clouds are primarily formed by water

  (A) precipitating onto the ground

  (B) changing from a solid to a liquid state

  (C) evaporating from the oceans

  (D) being carried by wind

  4. The passage suggests that the purpose of the hydrographic network (line 8) is to

  (A) determine the size of molecules of water

  (B) prevent soil erosion caused by flooding

  (C) move water from the Earth's surface to the oceans

  (D) regulate the rate of water flow from streams and rivers

  5. What determines the rate at which a molecule of water moves through the cycle, as discussed

  in the third paragraph?

  (A) The potential energy contained in water

  (B) The effects of atmospheric pressure on chemical compounds

  (C) The amounts of rainfall that fall on the continents

  (D) The relative size of the water storage areas

  6. The word rapidity in line 19 is closest in meaning to

  (A) significance

  (B) method

  (C) swiftness

  (D) reliability

  7. The word they in line 24 refers to

  (A) insoluble ions

  (B) soluble ions

  (C) soils

  (D) continents

  8. All of the following are example of soluble ions EXCEPT

  (A) magnesium

  (B) iron

  (C) potassium

  (D) calcium

  9. The word efficiency in line 27 is closest in meaning to

  (A) relationship

  (B) growth

  (C) influence

  (D) effectiveness

  PASSAGE 2 AACCD CABD

  以上就是关于“托福阅读原文备考积累”的内容,想要更好地申请留学,那么大家在备考的过程中,就要更好地提高我们的语言成绩,这样在我们之后的申请中才能有更大的帮助。小编也提前预祝大家能够取得高分成绩。


展开显示全文