MILKY QUARTZ IS TYPICALLY OPAQUE AND WHITISH INA.AS THE STOCK MARK...

28. Milky quartz is typically opaque and whitish ina.As the stock market crash of 1929 was knowncolor because it contains microscopic bubbles orfluid-filled cavities that scatter light rather thanas Black Friday,b.The stock market crash of 1929 was known asallowing it to pass through as it would in a clearBlack Friday,crystal.c. The stock market crash of 1929 lost almosta.Milky quartz is typically opaque and whitishhalf of the market’s value in less than twoin color because it contains microscopic bub-months, whereasbles or fluid-filled cavities that scatter light b.Milky quartz is typically whitish and opaqued.In the stock market crash of 1929, almost halfbecause it contains microscopic bubbles orof the market’s value was lost over the courseof two months, whereas fluid-filled cavities. These bubbles or cavitiese. Because the stock market crash of 1929 wasscatter light known as Black Friday,c. Milky quartz is typically opaque and whitishin color. It contains microscopic bubbles orfluid-filled cavities that scatter lightd.Milky quartz is typically whitish and opaque.It is because it contains microscopic bubblesor fluid-filled cavities that scatter light e. Milky quartz contains microscopic bubbles orfluid-filled cavities that make it typicallyopaque and whitish, and that scatter light

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Directions:Questions 31–35 are based on the following passage, a first draft of an essay about the history of bicy-cles. Read the passage and the questions that follow. For each question, choose the answer that will most improvethe passage. Some questions ask you to choose the best revision of a particular sentence or pair of sentences. Otherquestions ask you to consider how to best improve the overall organization of the passage. In each case, the cor-rect answer is the one that most closely conforms to the conventions of formal writing.(1)Today, bicycles are so common it’s hard to believe they haven’t always been around. (2)But two hundred yearsago, bicycles weren’t even existing, and the first bicycle, invented in Germany in 1818, was nothing like our bicy-cles today—it was made of wood and didn’t even have pedals. (3)Since then, however, numerous innovations andimprovements in design have made the bicycle one of the most popular means of recreation and transportationaround the world.(4)In 1849, James Starley, an English inventor, made the front wheel many times larger than the backwheel, put a gear on the pedals to make the bicycle more efficient, and lightened the wheels by using wire spokes.(5)Although this bicycle was much lighter and less tiring to ride, it was still clumsy, and ridden mostly for enter-tainment. (6)In 1839, Kirkpatrick Macmillan a Scottish blacksmith dramatically improved upon the original bicy-cle design, employing tires with iron rims to keep them from getting worn down. (7)But the back wheel wassubstantially larger than the front wheel.(8)Another Englishman, H.J. Lawson, invented the “safety bicycle,” which had equal sized wheels that wereless prone to toppling over. (9)Lawson also attached a chain to the pedals to drive the rear wheel. (10)As the bicy-cle improved over time, its popularity grew and it became useful for transportation.

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P R A C T I C E T E S T 3

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