Adapted from “Birds in Retreat” in “Animal Defences—Active Defence” in Volume Four of The Natural History of Animals: The Animal Life of the World in Its Various Aspects and Relations by James Richard Ainsworth Davis (1903)

Among the large running birds are forms, like the African ostrich, in which the absence of powers of flight is largely compensated by the specialization of the legs for the purpose of rapid movement on the ground. For straightforward retreat in open country nothing could be more effective; but another kind of adaptation is required in birds like rails, which are deficient in powers of flight, and yet are able to run through thickly-growing vegetation with such rapidity as to commonly elude their enemies. This is rendered possible by the shape of their bodies, which are relatively narrow and flattened from side to side, so as to easily slip between the stems of grasses, rushes, and similar plants. Anyone who has pursued our native land-rail or corn-crake with intent to capture will have noted how extremely difficult it is even to get within sight of a bird of this sort.

Certain birds, unfortunately for themselves, have lost the power of flight without correspondingly increased powers of running, and have paid the penalty of extinction. Such an arrangement, as might be anticipated, was the result of evolution in islands devoid of any predatory ground-animals, and a classic example of it is afforded by the dodo and its allies, birds related to the pigeons. The dodo itself was a large and clumsy-looking species that at one time abounded in the island of Mauritius, which, like oceanic islands generally, possessed no native mammals, while its indigenous reptiles were only represented by lizards. The ubiquitous sailor, however, and the animals (especially swine) which he introduced, brought about the extinction of this helpless bird in less than a century after its first discovery in 1598. Its memory is now only kept green by a few contemporary drawings and descriptions, certain museum remains, and the proverb "as extinct as a dodo.” A similar fate must overtake any organism suddenly exposed to new and unfavorable conditions, if devoid of sufficient plasticity to rapidly accommodate itself to the altered environment.

The purpose of the underlined sentence is                     .

"The Multiple Sides of Computer Science" by Matthew Minerd (2014)

It often takes some time for a new discipline to become recognized as an independent science. An excellent example of this is computer science. In many ways, this science still is a hodgepodge of several different sciences, each one having its own distinct character. For example, some computer scientists are almost indistinguishable from mathematicians. Many of the most difficult topics in pattern recognition and data communications require intensive mathematics in order to provide software solutions. Years of training in the appropriate disciplines are necessary before the computer scientist can even begin to work as a programmer in such areas. In contrast to those computer scientists who work with complex mathematics, many computer scientists work on areas of hardware development that are similar to disciplines like electrical engineering and physics.

However, computer science has its own particular problems regarding the unity of its subject matter. There are many practical applications for computing work; therefore, many computer scientists focus on learning a large set of skills in programming languages, development environments, and even information technology. All of these disciplines have a certain practical coloration that is quite distinct from the theoretical concepts used in other parts of the field. Nevertheless, these practical topics add to the broad range of topics covered by most academic programs that claim to focus on “computer science.” It can only be hoped that these disciplines will increase in orderliness in the coming decades.

Based on this passage, which of the following might be true about the early history of modern physics?

Adapted from a letter by T. Thatcher published in The Publishers Circular on September 27th, 1902

A PLEA FOR A LONG WALK

Sir—In these days of increasing rapid artificial locomotion, may I be permitted to say a word in favor of a very worthy and valuable old friend of mine, Mr. Long-Walk?

I am afraid that this good gentleman is in danger of getting neglected, if not forgotten. We live in days of water trips and land trips, excursions by sea, road, and rail—bicycles and tricycles, tram cars and motor cars, hansom cabs and ugly cabs; but in my humble opinion good honest walking exercise for health beats all other kinds of locomotion into a cocked hat. In rapid traveling all the finer nerves, senses, and vessels are "rush" and unduly excited, but in walking every particle of the human frame, and even the moral faculties, are evenly and naturally brought into exercise. It is the best discipline and physical mental tonic in the world. Limbs, body, muscles, lungs, chest, heart, digestion, breathing, are healthily brought into normal operation, while. especially in the long distance walk, the exercise of patience, perseverance, industry, energy, perception, and reflection—and, indeed, all the senses and moral faculties—are elevated and cultivated healthfully and naturally. Many never know the beauty of it because they never go far enough: exercise and hard work should never be relinquished at any age or by either sex. Heart disease, faintness, and sudden death, and even crime, are far more due to the absence of wholesome normal exercise and taste than to anything else, to enervating luxuries rather than to hill climbing.

I usually give myself a holiday on a birthday, and as I lately reached my 63rd I determined to give myself a day with my old friend Mr. Long-Walk, and decided to tramp to the city of Wells and back for my birthday holiday—a distance of about forty-two miles. Fortune favors the brave, and, thanks to a mosquito that pitched on my nose and was just commencing operations, I woke very early in the morning. It is an ill wind that blows no one any good. Mosquitoes are early birds, but I stole a march on them. But to my journey.

I started at about 5 A.M., and proceeding via Dundry and Chow Stoke, reached Wells soon after 10 A.M. After attending the cathedral, I pursued my walk homeward by a different route,via Chewton Mendip, Farrington, Temple Cloud, Clutton, and Pensford.

To make a walk successful, mind and body should be free of burden. I never carry a stick on a long walk, but prefer to be perfectly free, giving Nature’s balancing poles—the pendulum arms—complete swing and absolute liberty. Walking exercises, together with a well-educated palate, are the greatest physicians in the world: no disease can withstand them. I returned from my forty-two miles tramp with birthday honors and reward. I had no headache on the following morning, but was up early in good form, fresh and ready for work. Forty-two miles may be too strong a dose for many, but I cannot too strongly recommend for a day’s companionship the society of my old and well-tried friend, Mr. Long-Walk.

Faithfully yours,

T. Thatcher

44 College Green, Bristol.

The purpose of this letter is mostly likely to                     .

"Cacti" by Ami Dave (2013)

Cacti are plants suited to the desert, and we must always keep this factor in mind when growing ornamental cacti in our gardens, for it helps us provide cacti with conditions that allow them to survive and thrive. For example, a cactus should never be watered over its body, as it will start to rot. This is because it is covered with a waxy coating which prevents water loss through evaporation. When one waters the cactus over its body, the waxy coating is washed away and the plant begins to rot. The amount of water that one must supply to the cactus is very much dependent upon the season and upon the climate of the place. During the summer season one should water cacti every four days, whereas in the rainy season, once every fifteen days is quite enough.

Cacti need a minimum of two and a half hours of sunlight per day; however, they should not be kept in the sun all day because they may wrinkle when exposed to too much bright sunlight. Unlike other plants, cacti produce carbon dioxide during the day and oxygen during the night, so they are ideal plants to be kept in bedrooms to freshen up the air at night.

If a cactus is to thrive and prosper, the size of the pot in which it is grown needs to be monitored carefully. The pot should always be a little smaller than the plant itself because it is only when the plant has to struggle to survive that it will thrive. If the pot is too spacious and the plant does not need to struggle, chances are that the cactus will die. Similarly, if a cactus shows no signs of growth, stop watering it. Watering should be resumed only when the plant begins to grow again.

The substrata of a cactus pot is ideally composed of pieces of broken bricks at the bottom, followed by a layer of charcoal above the bricks, and then coarse sand and pebbles above the charcoal. Leaf mould is the best manure.

Grafting cacti is very simple. A very small piece of the cactus plant should be stuck with tape to the plant that needs grafting. The smaller the piece, the easier it is to graft. To reproduce cacti, one has to simply cut off a piece of the cactus, allow it to dry for a few days, and then place it over the cacti substrate. It will automatically develop roots.

It is very easy to differentiate between cacti and other plants that look like cacti. All cacti have fine hair at the base of each thorn. The so-called “thorns” are in fact highly modified leaves which prevent loss of water through transpiration. If one ever gets pricked by cacti thorns, one should take tape, place it over the area where the thorns have penetrated the skin, and then peel it off. All of the thorns will get stuck to the tape and will be removed.

The purpose of this passage is to                     .

Adapted from The Fight at the Pass of Thermopylæ by Charlotte M. Yonge (1876)

The troops sent for this purpose were from different cities, and amounted to about 4,000 who were to keep the pass against two millions. The leader of them was Leonidas, who had newly become one of the two kings of Sparta, the city that above all in Greece trained its sons to be hardy soldiers, dreading death infinitely less than shame. Leonidas had already made up his mind that the expedition would probably be his death, perhaps because a prophecy had been given at the Temple at Delphi that Sparta should be saved by the death of one of her kings of the race of Hercules. He was allowed by law to take with him 300 men, and these he chose most carefully, not merely for their strength and valor, but selecting those who had sons, so that no family might be altogether destroyed. These Spartans, with their helots or slaves, made up his own share of the numbers, but all the army was under his generalship. It is even said that the 300 celebrated their own funeral rites before they set out lest they should be deprived of them by the enemy, since, as we have already seen, it was the Greek belief that the spirits of the dead found no rest till their obsequies had been performed. Such preparations did not daunt the spirits of Leonidas and his men, and his wife, Gorgo, not a woman to be faint-hearted or hold him back. Long before, when she was a very little girl, a word of hers had saved her father from listening to a traitorous message from the King of Persia; and every Spartan lady was bred up to be able to say to those she best loved that they must come home from battle "with the shield or carried upon it."

Why did the Spartans celebrate their funeral rites before they departed?

Adapted from The Fight at the Pass of Thermopylæ by Charlotte M. Yonge (1876)

The troops sent for this purpose were from different cities, and amounted to about 4,000 who were to keep the pass against two millions. The leader of them was Leonidas, who had newly become one of the two kings of Sparta, the city that above all in Greece trained its sons to be hardy soldiers, dreading death infinitely less than shame. Leonidas had already made up his mind that the expedition would probably be his death, perhaps because a prophecy had been given at the Temple at Delphi that Sparta should be saved by the death of one of her kings of the race of Hercules. He was allowed by law to take with him 300 men, and these he chose most carefully, not merely for their strength and valor, but selecting those who had sons, so that no family might be altogether destroyed. These Spartans, with their helots or slaves, made up his own share of the numbers, but all the army was under his generalship. It is even said that the 300 celebrated their own funeral rites before they set out lest they should be deprived of them by the enemy, since, as we have already seen, it was the Greek belief that the spirits of the dead found no rest till their obsequies had been performed. Such preparations did not daunt the spirits of Leonidas and his men, and his wife, Gorgo, not a woman to be faint-hearted or hold him back. Long before, when she was a very little girl, a word of hers had saved her father from listening to a traitorous message from the King of Persia; and every Spartan lady was bred up to be able to say to those she best loved that they must come home from battle "with the shield or carried upon it."

Why did Leonidas think he was going to die defending Sparta?

Adapted from “Birds in Retreat” in “Animal Defences—Active Defence” in Volume Four of The Natural History of Animals: The Animal Life of the World in Its Various Aspects and Relations by James Richard Ainsworth Davis (1903)

Among the large running birds are forms, like the African ostrich, in which the absence of powers of flight is largely compensated by the specialization of the legs for the purpose of rapid movement on the ground. For straightforward retreat in open country nothing could be more effective; but another kind of adaptation is required in birds like rails, which are deficient in powers of flight, and yet are able to run through thickly-growing vegetation with such rapidity as to commonly elude their enemies. This is rendered possible by the shape of their bodies, which are relatively narrow and flattened from side to side, so as to easily slip between the stems of grasses, rushes, and similar plants. Anyone who has pursued our native land-rail or corn-crake with intent to capture will have noted how extremely difficult it is even to get within sight of a bird of this sort.

Certain birds, unfortunately for themselves, have lost the power of flight without correspondingly increased powers of running, and have paid the penalty of extinction. Such an arrangement, as might be anticipated, was the result of evolution in islands devoid of any predatory ground-animals, and a classic example of it is afforded by the dodo and its allies, birds related to the pigeons. The dodo itself was a large and clumsy-looking species that at one time abounded in the island of Mauritius, which, like oceanic islands generally, possessed no native mammals, while its indigenous reptiles were only represented by lizards. The ubiquitous sailor, however, and the animals (especially swine) which he introduced, brought about the extinction of this helpless bird in less than a century after its first discovery in 1598. Its memory is now only kept green by a few contemporary drawings and descriptions, certain museum remains, and the proverb "as extinct as a dodo.” A similar fate must overtake any organism suddenly exposed to new and unfavorable conditions, if devoid of sufficient plasticity to rapidly accommodate itself to the altered environment.

The purpose of the underlined sentence is                     .

There are two great mistakes in modern times regarding the possibility of knowing whether or not God exists. On the one hand, there are a number of people who believe that any natural knowledge of God is impossible. Among the ranks of such people are included not only scientists and atheists. There are likewise very religious people who believe that God is not at all known without religion. On the other hand there are those who believe that God’s existence is easily proven. Each of these positions is inadequate, though they do note truths that should not be overlooked.

Those who defend the possibility of knowing God’s existence without religion could be said to be members of a tradition of “natural theology.” This type of thought has taken many forms over the centuries; however, itscentral claim is that human knowledge can consider things like motion, change, beings, beauty, or other natural realities in order to know God as the source of motion, being, beauty, and so forth. This tradition has had many defenders, and it should not be quickly dismissed as a mere “left over” from another era.

Nevertheless, many of its proponents act as though its conclusions are very obvious and easily reached. This, however, is not actually the case, for such natural theology admittedly deals with profound, difficult questions. Inasmuch as the opponents of natural theology reject such simplistic arguments, they offer an honest critique; however, it is also very important to note that this other extreme position ultimately means that religion is completely irrational. While this might perhaps be acceptable for a dedicated atheist, it is unlikely that a religious person would want to say that he has “no rational reason” to believe in God.

These two positions ultimately are too extreme in their claims. The best approach to finding the truth of the matter is in considering the strengths and weaknesses of each argument. It is important to understand how religion is more than complete irrationality, for it has had an undeniably positive influence on much of culture and history. Indeed, it is also necessary to consider how there have been honest philosophers who believed in God without being religious in any explicit manner. On the other hand, it is necessary to admit that belief does not come naturally to many people as often seems to be implied by those who strongly defend the possibility of natural theology.

What is the purpose of the second paragraph of this selection?

"The Multiple Sides of Computer Science" by Matthew Minerd (2014)

It often takes some time for a new discipline to become recognized as an independent science. An excellent example of this is computer science. In many ways, this science still is a hodgepodge of several different sciences, each one having its own distinct character. For example, some computer scientists are almost indistinguishable from mathematicians. Many of the most difficult topics in pattern recognition and data communications require intensive mathematics in order to provide software solutions. Years of training in the appropriate disciplines are necessary before the computer scientist can even begin to work as a programmer in such areas. In contrast to those computer scientists who work with complex mathematics, many computer scientists work on areas of hardware development that are similar to disciplines like electrical engineering and physics.

However, computer science has its own particular problems regarding the unity of its subject matter. There are many practical applications for computing work; therefore, many computer scientists focus on learning a large set of skills in programming languages, development environments, and even information technology. All of these disciplines have a certain practical coloration that is quite distinct from the theoretical concepts used in other parts of the field. Nevertheless, these practical topics add to the broad range of topics covered by most academic programs that claim to focus on “computer science.” It can only be hoped that these disciplines will increase in orderliness in the coming decades.

Based on this passage, which of the following might be true about the early history of modern physics?

Adapted from Seven Discourses Delivered in the Royal Academy By the President by Joshua Reynolds (1778)

All the objects which are exhibited to our view by nature, upon close examination will be found to have their blemishes and defects. The most beautiful forms have something about them like weakness, minuteness, or imperfection. But it is not every eye that perceives these blemishes. It must be an eye long used to the contemplation and comparison of these forms—and which, by a long habit of observing what any set of objects of the same kind have in common, that alone can acquire the power of discerning what each wants in particular. This long laborious comparison should be the first study of the painter who aims at the greatest style. By this means, he acquires a just idea of beautiful forms; he corrects nature by herself, her imperfect state by her more perfect. His eye being enabled to distinguish the accidental deficiencies, excrescences, and deformities of things from their general figures, he makes out an abstract idea of their forms more perfect than any one original—and what may seem a paradox, he learns to design naturally by drawing his figures unlike to any one object. This idea of the perfect state of nature, which the artist calls the ideal beauty, is the great leading principle by which works of genius are conducted. By this, Phidias acquired his fame. He wrought upon a sober principle what has so much excited the enthusiasm of the world—and by this method you, who have courage to tread the same path, may acquire equal reputation.

The main argument of the passage is                     .