"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 Evolutionist at Large by Grant Allen (1881)

I am engaged in watching a brigade of ants out on foraging duty, and intent on securing for the nest three whole segments of a deceased earthworm. They look for all the world like those busy companies one sees in the Egyptian wall paintings, dragging home a huge granite colossus by sheer force of bone and sinew. Every muscle in their tiny bodies is strained to the utmost as they pry themselves laboriously against the great boulders that strew the path, and that are known to our Brobdingnagian intelligence as grains of sand. Besides the workers themselves, a whole battalion of stragglers runs to and fro upon the broad line that leads to the headquarters of the community. The province of these stragglers, who seem so busy doing nothing, probably consists in keeping communications open, and encouraging the sturdy pullers by occasional relays of fresh workmen. I often wish that I could for a while get inside those tiny brains, and see, or rather smell, the world as ants do. For there can be little doubt that to these brave little carnivores here the universe is chiefly known as a collective bundle of odors, simultaneous or consecutive. As our world is mainly a world of visible objects, theirs, I believe, is mainly a world of olfactible things.

In the head of every one of these little creatures is something that we may fairly call a brain. Of course most insects have no real brains; the nerve-substance in their heads is a mere collection of ill-arranged ganglia, directly connected with their organs of sense. Whatever man may be, an earwig at least is a conscious, or rather a semi-conscious, automaton. He has just a few knots of nerve cells in his little pate, each of which leads straight from his dim eye or his vague ear or his indefinite organs of taste; and his muscles obey the promptings of external sensations without possibility of hesitation or consideration, as mechanically as the valve of a steam engine obeys the governor balls. The poor soul's intellect is wholly deficient, and the senses alone make up all that there is of him, subjectively considered. But it is not so with the highest insects. They have something that truly answers to the real brain of men, apes, and dogs, to the cerebral hemispheres and the cerebellum that are superadded in us mammals upon the simple sense-centers of lower creatures. Besides the eye, with its optic nerve and optic perceptive organs—besides the ear, with its similar mechanism—we mammalian lords of creation have a higher and more genuine brain, that collects and compares the information given to the senses, and sends down the appropriate messages to the muscles accordingly. Now, bees and flies and ants have got much the same sort of arrangement, on a smaller scale, within their tiny heads. On top of the little knots that do duty as nerve centers for their eyes and mouths, stand two stalked bits of nervous matter, whose duty is analogous to that of our own brains. And that is why these three sorts of insects think and reason so much more intellectually than beetles or butterflies, and why the larger part of them have organized their domestic arrangements on such an excellent cooperative plan.

We know well enough what forms the main material of thought with bees and flies, and that is visible objects. For you must think about something if you think at all; and you can hardly imagine a contemplative blow-fly setting itself down to reflect, like a Hindu devotee, on the syllable Om, or on the oneness of existence. Abstract ideas are not likely to play a large part in apian consciousness. A bee has a very perfect eye, and with this eye it can see not only form, but also color, as Sir John Lubbock's experiments have shown us. The information that it gets through its eye, coupled with other ideas derived from touch, smell, and taste, no doubt makes up the main thinkable and knowable universe as it reveals itself to the apian intelligence. To ourselves and to bees alike the world is, on the whole, a colored picture, with the notions of distance and solidity thrown in by touch and muscular effort; but sight undoubtedly plays the first part in forming our total conception of things generally.

In the first paragraph, the information about Egyptian wall paintings serves to __________.

Adapted from “The Influence of the Conception of Evolution on Modern Philosophy” by H. Höffding (1909) in Evolution in Modern Thought (1917 ed.)

When The Origin of Species appeared fifty years ago, Romantic speculation, Schelling's and Hegel's philosophy, still reigned on the continent, while in England, Positivism, the philosophy of Comte and Stuart Mill, represented the most important trend of thought. German speculation had much to say on evolution; it even pretended to be a philosophy of evolution. But then the word "evolution" was to be taken in an ideal, not in a real, sense. To speculative thought, the forms and types of nature formed a system of ideas, within which any form could lead us by continuous transitions to any other. It was a classificatory system which was regarded as a divine world of thought or images, within which metamorphoses could go on—a condition comparable with that in the mind of the poet when one image follows another with imperceptible changes.

Goethe's ideas of evolution, as expressed in his Metamorphosen der Pflanzen und der Thiere, belong to this category; it is, therefore, incorrect to call him a forerunner of Darwin. Schelling and Hegel held the same idea; Hegel expressly rejected the conception of a real evolution in time as coarse and materialistic. "Nature," he says, "is to be considered as a system of stages, the one necessarily arising from the other, and being the nearest truth of that from which it proceeds; but not in such a way that the one is naturally generated by the other; on the contrary [their connection lies] in the inner idea which is the ground of nature. The metamorphosis can be ascribed only to the notion as such, because it alone is evolution.... It has been a clumsy idea in the older as well as in the newer philosophy of nature, to regard the transformation and the transition from one natural form and sphere to a higher as an outward and actual production."

Which of the following best describes the author’s presentation of Hegel’s thought about evolution?

Adapted from On the Origin of Species by Charles Darwin (1859)

How will the struggle for existence, discussed too briefly in the last chapter, act in regard to variation? Can the principle of selection, which we have seen is so potent in the hands of man, apply in nature? I think we shall see that it can act most effectually. Let it be borne in mind in what an endless number of strange peculiarities our domestic productions, and, in a lesser degree, those under nature, vary; and how strong the hereditary tendency is. Under domestication, it may be truly said that the whole organization becomes in some degree plastic. Let it be borne in mind how infinitely complex and close-fitting are the mutual relations of all organic beings to each other and to their physical conditions of life. Can it, then, be thought improbable, seeing that variations useful to man have undoubtedly occurred, that other variations useful in some way to each being in the great and complex battle of life, should sometimes occur in the course of thousands of generations? If such do occur, can we doubt (remembering that many more individuals are born than can possibly survive) that individuals having any advantage, however slight, over others, would have the best chance of surviving and of procreating their kind? On the other hand, we may feel sure that any variation in the least degree injurious would be rigidly destroyed. This preservation of favorable variations and the rejection of injurious variations, I call Natural Selection. Variations neither useful nor injurious would not be affected by natural selection, and would be left a fluctuating element, as perhaps we see in the species called polymorphic.

We shall best understand the probable course of natural selection by taking the case of a country undergoing some physical change, for instance, of climate. The proportional numbers of its inhabitants would almost immediately undergo a change, and some species might become extinct. We may conclude, from what we have seen of the intimate and complex manner in which the inhabitants of each country are bound together, that any change in the numerical proportions of some of the inhabitants, independently of the change of climate itself, would most seriously affect many of the others. If the country were open on its borders, new forms would certainly immigrate, and this also would seriously disturb the relations of some of the former inhabitants. Let it be remembered how powerful the influence of a single introduced tree or mammal has been shown to be. But in the case of an island, or of a country partly surrounded by barriers, into which new and better adapted forms could not freely enter, we should then have places in the economy of nature which would assuredly be better filled up, if some of the original inhabitants were in some manner modified; for, had the area been open to immigration, these same places would have been seized on by intruders. In such case, every slight modification, which in the course of ages chanced to arise, and which in any way favoured the individuals of any of the species, by better adapting them to their altered conditions, would tend to be preserved; and natural selection would thus have free scope for the work of improvement.

The intended effect of this passage is __________.

Adapted from "Address to the Court" by Eugene Debs (1918)

Your Honor, I have stated in this court that I am opposed to the form of our present government; that I am opposed to the social system in which we live; that I believed in the change of both—but by perfectly peaceable and orderly means.

Let me call your attention to the fact this morning that in this system five percent of our people own and control two-thirds of our wealth; sixty-five percent of the people, embracing the working class who produce all wealth, have but five percent to show for it.

Standing here this morning, I recall my boyhood. At fourteen I went to work in a railroad shop; at sixteen I was firing a freight engine on a railroad. I remember all the hardships and privations of that earlier day, and from that time until now my heart has been with the working class. I could have been in Congress long ago. I have preferred to go to prison. The choice has been deliberately made. I could not have done otherwise. I have no regret.

In the struggle, the unceasing struggle, between the toilers and producers and their exploiters, I have tried, as best I might, to serve those among whom I was born, with whom I expect to share my lot until the end of my days. I am thinking this morning of the men in the mills and factories; I am thinking of the men in the mines and on the railroads; I am thinking of the women who, for a paltry wage, are compelled to work out their lives; of the little children, who in this system, are robbed of their childhood, and in their early, tender years are seized in the remorseless grasp of Mammon, and forced into the industrial dungeons, there to feed the machines while they themselves are being starved body and soul. I see them dwarfed, diseased, stunted, their little lives broken, and their hopes blasted, because in this high noon of our twentieth-century civilization money is still so much more important than human life. Gold is god and rules in the affairs of men.

What is the primary purpose of this passage?

Adapted from "Address to the Court" by Eugene Debs (1918)

Your Honor, I have stated in this court that I am opposed to the form of our present government; that I am opposed to the social system in which we live; that I believed in the change of both—but by perfectly peaceable and orderly means.

Let me call your attention to the fact this morning that in this system five percent of our people own and control two-thirds of our wealth; sixty-five percent of the people, embracing the working class who produce all wealth, have but five percent to show for it.

Standing here this morning, I recall my boyhood. At fourteen I went to work in a railroad shop; at sixteen I was firing a freight engine on a railroad. I remember all the hardships and privations of that earlier day, and from that time until now my heart has been with the working class. I could have been in Congress long ago. I have preferred to go to prison. The choice has been deliberately made. I could not have done otherwise. I have no regret.

In the struggle, the unceasing struggle, between the toilers and producers and their exploiters, I have tried, as best I might, to serve those among whom I was born, with whom I expect to share my lot until the end of my days. I am thinking this morning of the men in the mills and factories; I am thinking of the men in the mines and on the railroads; I am thinking of the women who, for a paltry wage, are compelled to work out their lives; of the little children, who in this system, are robbed of their childhood, and in their early, tender years are seized in the remorseless grasp of Mammon, and forced into the industrial dungeons, there to feed the machines while they themselves are being starved body and soul. I see them dwarfed, diseased, stunted, their little lives broken, and their hopes blasted, because in this high noon of our twentieth-century civilization money is still so much more important than human life. Gold is god and rules in the affairs of men.

The author references his childhood experiences to emphasize __________.

"The Holy Roman Empire" by Daniel Morrison (2014)

The Holy Roman Empire was somewhat unique among the various organized states of Middle and Early Modern Europe in that the Emperor was chosen by a group of electors. This is in stark contrast to the strict hereditary nature of English or French succession - where the position of monarch was handed down from the outgoing ruler to his closest legitimate heir, usually a son. In the Holy Roman Empire the Emperor was chosen by seven electors which in theory might seem to give the Empire a sort of early democratic flavor. However, in practice, only two or three families were ever able to draw on sufficient personal wealth to stand for election. Of these the Luxembourgs and the Hapsburgs are most well known. The Hapsburgs were so successful that they were able to maintain their “elected” position for almost four centuries. And, the Luxembourgs somehow still have a small country named after their family almost seven hundred years after their fall from dominance.

What can you infer about the author’s use of quotations around the word “elected”?

Adapted from Early European History by Hutton Webster (1917) 

The prehistoric period is commonly divided, according to the character of the materials used for tools and weapons, into the Age of Stone and the Age of Metals. The one is the age of savagery; the other is the age of barbarism or semi-civilization.

Man's earliest implements were those that lay ready to his hand. A branch from a tree served as a spear; a thick stick in his strong arms became a powerful club. Later, perhaps, came the use of a hard stone such as flint, which could be chipped into the forms of arrowheads, axes, and spear tips. The first stone implements were so rude in shape that it is difficult to believe them of human workmanship. They may have been made several hundred thousand years ago. After countless centuries of slow advance, early people learned to fasten wooden handles to their stone tools and weapons and also to use such materials as jade and granite, which could be ground and polished into a variety of forms. Stone implements continued to be made during the greater part of the prehistoric period. Every region of the world has had a Stone Age.  Its length is reckoned, not by centuries, but by millennia.

The Age of Metals, compared with its predecessor, covers a brief expanse of time. The use of metals came in not much before the dawn of history. The earliest civilized peoples, the Babylonians and Egyptians, when we first become acquainted with them, appear to be passing from the use of stone implements to those of metal. Copper was the first metal in common use. The credit for the invention of copper tools seems to belong to the Egyptians. At a very early date they were working the copper mines on the peninsula of Sinai. The Babylonians probably obtained their copper from the same region. Another source of this metal was the island of Cyprus in the eastern Mediterranean. The Greek name of the island means "copper." But copper tools were soft and would not keep an edge. Some ancient smith, more ingenious than his fellows, discovered that the addition of a small part of tin to the copper produced a new metal—bronze—harder than the old, yet capable of being molded into a variety of forms. At least as early as 3000 BCE we find bronze taking the place of copper in both Egypt and Babylonia. Somewhat later bronze was introduced into the island of Crete, then along the eastern coast of Greece, and afterwards into other European countries.

The introduction of iron occurred in comparatively recent times. At first it was a scarce, and therefore a very precious, metal. The Egyptians seem to have made little use of iron before 1500 BCE They called it "the metal of heaven," as if they obtained it from meteorites. In the Greek Homeric poems, composed about 900 BCE or later, we find iron considered so valuable that a lump of it is one of the chief prizes at athletic games. In the first five books of the Bible iron is mentioned only thirteen times, though copper and bronze are referred to forty-four times. Iron is more difficult to work than either copper or bronze, but it is vastly superior to those metals in hardness and durability. Hence it gradually displaced them throughout the greater part of the Old World.

Why does the author think it is “difficult to believe [the first stone tools were] of human workmanship"?

Passage adapted from H.G Wells' Anticipations (1901)

Democracy of the modern type—manhood suffrage and so forth—became a conspicuous phenomenon in the world only in the closing decades of the eighteenth century. Its genesis is so intimately connected with the first expansion of the productive element in the State, through mechanism and a co-operative organization, as to point at once to a causative connection. The more closely one looks into the social and political life of the eighteenth century the more plausible becomes this view. New and potentially influential social factors had begun to appear—the organizing manufacturer, the intelligent worker, the skilled tenant, and the urban abyss, and the traditions of the old land-owning non-progressive aristocratic monarchy that prevailed in Christendom, rendered it incapable—without some destructive shock or convulsion—of any re-organization to incorporate or control these new factors. In the case of the British Empire an additional stress was created by the incapacity of the formal government to assimilate the developing civilization of the American colonies. Everywhere there were new elements, not as yet clearly analyzed or defined, arising as mechanism arose; everywhere the old traditional government and social system, defined and analyzed all too well, appeared increasingly obstructive, irrational, and feeble in its attempts to include and direct these new powers.

But now comes a point to which I am inclined to attach very great importance. The new powers were as yet shapeless. It was not the conflict of a new organization with the old. It was the preliminary dwarfing and deliquescence of the mature old beside the embryonic mass of the new. It was impossible then—it is, I believe, only beginning to be possible now—to estimate the proportions, possibilities, and inter-relations of the new social orders out of which a social organization has still to be built in the coming years. No formula of definite reconstruction had been evolved, or has even been evolved yet, after a hundred years. And these swelling inchoate new powers, whose very birth condition was the crippling, modification, or destruction of the old order, were almost forced to formulate their proceedings for a time, therefore, in general affirmative propositions that were really in effect not affirmative propositions at all, but propositions of repudiation and denial. "These kings and nobles and people privileged in relation to obsolescent functions cannot manage our affairs"—that was evident enough, that was the really essential question at that time, and since no other effectual substitute appeared ready made, the working doctrine of the infallible judgment of humanity in the gross, as distinguished from the quite indisputable incapacity of sample individuals, became, in spite of its inherent absurdity, a convenient and acceptable working hypothesis.

Which of the following sentences best describes the author's opinion regarding the organization of the forces leading to the social changes discussed in the passage?

"Why Learning Multiple Languages in Graduate School is Important" by Matthew Minerd (2013)

In graduate school, students are often required to learn a number of foreign languages in addition to their regular coursework. This can be quite frustrating and difficult, for the normal courses in graduate school require significantly more reading and writing than do undergraduate courses. It is not unusual for graduate students to have regular reading assignments of several hundred pages for each course that they take. Likewise, they often write papers of much greater length than those that they wrote as undergraduate students. When language examinations are added to this difficult course load, it can be very frustrating for graduate students to try to find the time to prepare for these additional examinations.

Although these frustrations are understandable, this system has not been created solely to cause woe for graduate students. Much of the work for which these students are being prepared will focus on research. While much has been written in English about many topics, adequate research can only be done if one is able to read what people have written in other languages. For instance, there are many important articles and books written about almost every topic by European scholars. If a graduate student does not know any foreign languages, all of these article and books will be impossible to read, and hence useless to their research endeavors. This would be a great loss for a student's research. Therefore, in spite of its frustrating aspects, the language examination process is an important component of graduate school education.

What is the overall purpose of the passage?