Free PSAT Mock Exam – Practice Online Confidently

To tremble in the face of a storm is to ______. 

The lengths of the three sides of a right triangle form a set of consecutive even integers when arranged from least to greatest. If the second largest side has a length of x, then which of the following equations could be used to solve for x?

Her character was completely _____ ; she was totally devoid of ______.

Oliver Goldsmith (1730–1774) wrote criticism, plays, novels, biographies, travelogues, and nearly every other conceivable kind of composition. This good-humored essay is from a series published in the Public Ledger and then in book form as The Citizen of the World (1762). Were we to estimate the learning of the English by the number of books that are every day published among them, perhaps no country, not even China itself, could equal them in this particular. I have reckoned not less than twenty-three new books published in one day, which, upon computation, makes eight thousand three hundred and ninety-five in one year. Most of these are not confined to one single science, but embrace the whole circle. History, politics, poetry, mathematics, metaphysics, and the philosophy of nature, are all comprised in a manual no larger than that in which our children are taught the letters. If then, we suppose the learned of England to read but an eighth part of the works which daily come from the press and surely non can pretend to learning upon less easy terms), at this rate every scholar will read a thousand books in one year. From such a calculation, you may conjecture what an amazing fund of literature a man must be possessed of, who thus reads three new books every day, not one of which but contains all the good things that ever were said or written. And yet I know not how it happens, but the English are not, in reality so learned as would seem from this calculation. We meet but few who know all arts and sciences to perfection; whether it is that the generality are incapable of such extensive knowledge, or that the authors of those books are not adequate instructors. In China, the Emperor himself takes cognizance of all the doctors in the kingdom who profess authorship. In England, every man may be an author, that can write; for they have by law a liberty, not only of saying what they please, but of being also as dull as they please. Yesterday, as I testified to my surprise, to the man in black, where writers could be found in sufficient number to throw off the books I saw daily crowding from the press. I at first imagined that their learned seminaries might take this method of instructing the world. But, to obviate this objection, my companion assured me that the doctors of colleges never wrote, and that some of them had actually forgot their reading. “But if you desire,” continued he, “to see a collection of authors, I fancy I can introduce you to a club, which assembles every Saturday at seven . . . .” I accepted his invitation; we walked together, and entered the house some time before the usual hour for the company assembling. My friend took this opportunity of letting me into the characters of the principal members of the club . . . “The first person,” said he, “of our society is Doctor Nonentity, a metaphysician. Most people think him a profound scholar, but, as he seldom speaks, I cannot be positive in that particular; he generally spreads himself before the fire, sucks his pipe, talks little, drinks much, and is reckoned very good company. I’m told he writes indexes to perfection: he makes essays on the origin of evil, philosophical inquiries upon any subject, and draws up an answer to any book upon 24 hours’ warning . . . .” The word obviate (paragraph 4) means

Adapted from "Taking a Second Look: An Analysis of Genetic Markers in Species Relatedness" by Joseph Ritchie (2014) Phylogenetics is the study of genetic composition in various species and is used by evolutionary biologists to investigate similarities in the molecular sequences of proteins in varying organisms. The amino acid sequences that build proteins are used to construct mathematical matrices that aid in determining evolutionary ties through the investigation of percentage similarities. The study of these matrices helps to expose evolutionary relationships between species that may not have the same overt characteristics. Species adapt and evolve based on the pressures that exist in their environment. Climate, food source, and habitat availability are only a few factors that act on species adaptation. These stressors can alter the physical characteristics of organisms. This divergence in evolution has made it difficult to determine the interrelatedness of organisms by analyzing their physical characteristics alone. For instance, looking only at physical characteristics, the ghost bat resembles a pigeon more than a spider monkey; however, phylogenetics has found that the amino acid sequences that construct the beta hemoglobin molecules of bats are twenty percent more similar to those of mammalian primates than those of birds. This helps reject the assumption that common physical characteristics between species are all that is needed to determine relatedness. The differences produced by divergent evolution observed in the forest-dwelling, arboreal spider monkey and the nocturnal, airborne ghost bat can be reconciled through homology. Homologous characteristics are anatomical traits that are similar in two or more different species. For instance, the bone structure of a spider monkey’s wrist and fingers greatly resembles that of a bat’s wing or even a whale’s fin. These similarities are reinforced by phylogenetic evidence that supports the idea that physically dissimilar species can be evolutionarily related through anatomical and genetic similarities. Paragraph four of the passage discusses which of the following?