2017年大学英语四级阅读寒假练习题(23)
英语四级阅读理解是英语四级考试中的重点部分，而随着时代的发展，英语四级中的阅读题型也在不断更替改变，下面是新东方网考研频道英语四级频道为大家整理的英语四级阅读寒假练习题，希望可以为大家带来帮助。Questions 31 to 35 are based on the following passage:
Designing a lens can be compared to playing chess. In chess a player tries
to trap his opponent's king in a series of moves. In creating a lens a lens
designer attempts to “trap” light by forcing all the rays arising from a single
point in the subject to focus on a single point in the image, as a consequence
of their passing through a series of transparent( 透明的) elements with precisely
curved surfaces. Since in both cases the ultimate goal and the means by which it
can be attained are known, one is tempted to think there will be a single best
decision at any point along the way. The number of possible consequences flowing
from any one decision is so large, however, as to bevirtually, if not actually,
infinite. Therefore in lens design, as inchess, perfect solutions to a problem
are beyond reach. Although this article will be concerned only with the design
of photographic lenses, the same principles apply to all lenses.
The lens designer has one enormous advantage over the chess player: the
designer is free to call on any available source of help to guide him through
the staggering number of possibilities. Most of that help once came from
mathematics and physics, but recently computer technology, information
theory,chemistry, industrial engineering and psychophysics have all contributed
to making the lens designer's job immeasurably more productive. Some of the
lenses on the market today were inconceivable a decade ago. Others whose design
is as much as a century old can now be mass produced at low cost. With the
development of automatic production methods, lenses are made by the millions,
both out of glass and out of plastics. Today's lenses are better than the best
lenses used by the great photographers of the past.Moreover, their price may
lower, in spite of the fact that 19th century craftsmen worked for only a few
dollars a week and today's lenses are more complex. The lens designer cannot
fail to be grateful for the science and technology that have made his work
easier and his creations more widely available, but he is also humbled: it is no
longer practical for a fine photographic lens to be designed from beginning to
end by a single human mind.
31.Lens design and chess playing are similar in that ____.
A) the final goal and the means by which it can be reached are known
B) perfect solutions to a problem can be found
C) any one decision at any point along the way to the goal can bring
numerous possible results
D) both A and C
32.The final goal of designing a lens is ____.
A) to trap the opponent's lenses
B) to focus light with lenses
C) to hand make lenses at low cost
D) to reflect light by means of curved surfaces
33.After the passage the author will talk about ____.
A) the principles of designing lenses
B) techniques of making contact lenses
C) the design of photographic lenses
D) styles of lenses
34.Which of the following words cannot be used to describe today's
lenses?
A) More delicate. B) Cheaper. C) Numerous. D) Unpopular.
35.Lens designers today ____.
A) have a large source of help to fall back on B) receive a low salary
C) are less respectable than those of the past D) are not decisive in the
lens design
参考答案：
31.答案D。见文章第一段四至六句，相似之处在于最终目标以及达到目标的手段都是
明确的，只是在任一环节上所作的任何一项决定都可能导致无数个结果。
32.答案B。见文章第三句“创造镜片时，设计者试图‘捕捉'光线，他们迫使源自物
体某个点的所有光线穿过一组曲度准确的透镜，结果光线集中在影像的一个点上。”
33.答案C。第一段的最后一句说“ this article will be concerned only with the design of
photographic lenses”，故C正确。contact lenses隐形眼镜。
34.答案D。第二段第四句说“另外一些其设计有百年之老的镜片现在可以大批量生产
且造价低廉。”根据此句可推出现在的镜片还保持着传统，但并不能推出它们是“不受欢迎 的”。故答案是 D。
35.答案A。依据是第二段的第一句话。 B，C和D文章没谈到。decisive果断的。
2017年大学英语四级阅读寒假练习题汇总
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