SSAT阅读考试例题练习

　　SSAT阅读在SSAT考试中占据的比重很大，对于我们国内的学生来说参加SSAT考试最难的部分就是SSAT阅读，今天，小编就为大家带来SSAT阅读题的内容，大家不妨来练习一下。

　　SSAT阅读考试例题：

　　Directions:

　　Read each passage carefully and then answer the questions about it. For each question, decide on the basis of the passage which one of the choices best answers the questions.

　　Radiation from the Sun continuously breaks two-atom oxygen molecules into single atoms. Some of these link up with ordinary oxygen molecules and form ozone. Some rejoin other free singles and revert to stable molecules. This Sun-energy process, if left undisturbed, maintains a fairly constant supply of ozone above the Earth’s surface. The ozone layer begins about eight miles up and is distributed thinly to about thirty miles up. This lofty umbrella of ozone shields the Earth from much of the Sun’s deadly ultraviolet rays. Without the ozone cover, life on Earth would be literally sunburned to death.

　　Some scientists believe that relatively small amount of synthetic chemicals, such as spray-can fluorocarbon or jet exhaust, reach the upper limits of the atmosphere and break down the three-atom ozone molecules. It is also believed that just one atom of the spray-can or get pollutant can affect vast numbers of ozone molecules. Weather research satellites have observed the ozone shield in great detail, but their data have neither put to rest the “doomsday theories” nor incited a global campaign to stop destroying the Earth’s protective covering.

　　使用方法:：

　　仔细阅读每一段，然后回答有关问题。对于每一个问题，根据文章中的一个选择，最好地回答问题。

　　来自太阳的辐射不断地将两个原子氧分子分解成单个原子。其中一些与普通的氧分子结合形成臭氧。一些重新加入其他自由单曲并回复到稳定的分子。如果不受干扰，这一太阳能过程可以维持地球表面上空相当稳定的臭氧供应。臭氧层从大约八英里开始，分布在三十英里处。这种高耸的臭氧伞保护地球免受太阳致命紫外线的伤害。如果没有臭氧层覆盖，地球上的生命将被太阳晒黑。

　　一些科学家认为，相对少量的合成化学物质，如喷雾可以氟碳或喷气废气，到达大气的上限，并分解三个原子的臭氧分子。人们还认为，只有一个原子的喷雾可以获得污染物会影响大量的臭氧分子。气象研究卫星已经详细观察了臭氧层的防护，但是他们的数据并没有使“末日论”停滞不前，也没有激起一场全球运动来停止破坏地球的保护性覆盖物。

　　1. According to the passage, ozone is a

　　根据文章，臭氧是

　　(A) kind of radiation

　　(B) deadly ultraviolet ray

　　(C) combination of oxygen atoms

　　(D) synthetic chemical

　　(E) free-floating atom

　　2. The destruction of the ozone layer would most likely result in a decrease in

　　臭氧层的破坏极有可能导致臭氧层的减少。

　　(A) life on Earth

　　(B) air pollution

　　(C) spray-can gases

　　(D) severe cases of sunburn

　　(E) radiation from the Sun

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