Glass
I wonder who first discovered glass. This commodity has been a part of civilization from the very beginning. Imagine a world without glass! How dark and dismal it would be. No windows, corrective lenses, telescopes, microscopes, cameras, sparkly drinking containers or mirrors. Life would not be the same without this wonderful discovery. Thank you, whoever found glass!
Glass is not an element, but a combination of several elements. It is a hard, brittle, transparent solid material composed mainly of silica, with additives to change the character of the glass. Common additives are soda, lime, lead, and boron. Each additive changes the properties of the final product. Soda and lime are the most common additives, accounting for about 90% of glass production. Adding lead increases reflectivity, causing the glass to "sparkle." The addition of boron changes the thermal and electrical properties of glass, allowing cookware that can be used in the oven without shattering.
What is the definition of 'brittle'?
- A. Flexible and resilient
- B. Easily broken
- C. Hard and fragile
- D. Tough and sturdy
Correct Answer: B
Rationale: The correct definition of 'brittle' is being 'easily broken,' making choice B the correct answer. Brittle materials are prone to breaking, cracking, or shattering when subjected to stress or pressure. In the context of glass, being described as 'brittle' means that it can break easily without much deformation or flexibility, unlike materials that are tough or resilient. Therefore, understanding the properties of materials like glass, including its brittleness, is crucial in various applications and industries.
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Linking San Francisco to Marin County in California, the Golden Gate Bridge is one of the most famous bridges in the world. The bridge crosses over a narrow strait which connects the Pacific Ocean to San Francisco Bay. Prior to the bridge, people traveled by ferry boat across the strait.
Although most people thought a bridge was necessary to expedite travel, some residents of the
bay area felt the risk of building the bridge was too great. Joseph Strauss believed that nothing was impossible, and dreams would never come to fruition if risks weren't taken. So, he decided to gather the best and brightest builders, architects, and workers to embark on the challenge of
building a bridge across the Golden Gate Strait. With safety nets in place, the construction began in 1937. Building the anchorages first, the
builders then move on to the towers on each end, and then to the three-foot thick cables to support the suspension bridge. Lastly, workers labored to complete the roadway which became
the most dangerous and treacherous part of the entire task. The builders had to keep the bridge
balance, so it wouldn't fall into the bay.
Today, over sixty-five years later, the bridge remains a life-line for the people of the San Francisco Bay Area.
What body of water does the Golden Gate Bridge cross?
- A. San Francisco Bay
- B. Pacific Ocean
- C. Marin Strait
- D. Golden Gate Strait
Correct Answer: D
Rationale: The Golden Gate Bridge crosses over the Golden Gate Strait, linking San Francisco to Marin County in California. The strait connects the Pacific Ocean to San Francisco Bay. It is essential to understand the specific geography of the area to correctly identify the body of water crossed by the bridge. Therefore, the correct answer is D, Golden Gate Strait.
What effect does your voice have on others? Does it persuade or irritate, attract or repel? One of
the worst qualities is harshness. If you ever get the feeling that people are uncomfortable when you speak, it may be that your harsh tones are jarring their eardrums. Your voice will sound
unpleasant if it is shrill, grating, hard, piercing, brassy, to loud, or too nasal. Harsh voice qualities usually come from too much tension in the throat and jaw. Tension tightens muscles and blocks the relaxed voice tones essential to a pleasing impression. Because tension occurs in higher pitched voices, women tend to have shriller voices than men, which usually makes them
less desirable public speakers, newscasters, or political candidates.
The information presented is
- A. Slanted in favor of newscasters
- B. Slanted against people with deep voices
- C. Slanted against people with piercing voices
- D. Balanced in its approach
Correct Answer: C
Rationale: The information presented in the text is slanted against people with piercing voices. It highlights the negative impact of harsh voice qualities such as being shrill, grating, hard, piercing, brassy, too loud, or too nasal. The text points out that these harsh voice qualities, often due to tension in the throat and jaw, can make a person's voice unpleasant and uncomfortable for others. While it briefly mentions women potentially having shriller voices than men, it does not specifically favor newscasters or target people with deep voices. Therefore, the correct answer is C, as the text focuses on the drawbacks associated with piercing voices.
The ebb and flow of laughter and silence fills the room as four old friends gather to engage in a
round of Bridge playing. For the beginner, Bridge can be complicated, but with time, effort, and a good teacher, even the novice can become proficient. Composed of two main parts, bidding and playing, Bridge requires the player's undivided attention. The dealer deals the entire deck of playing cards evenly between the for players, with
each person receiving thirteen cards. In the bidding portion of the game, the four suits of cards in the deck are ranked highest to lowest as follows: spades, hearts, diamonds, and finally clubs. However, during play all the suits of cards are
considered equals, and they go from highest to lowest from the ace being high to the two cards
being low. The highest number of tricks wins. A trick is one card played by each player for a
total of four. After the lead player lays down his/her card, the other players follow suit, if
possible. The highest card within the four "same suit" cards played wins the trick and picks up all
four cards. If a player cannot follow suit, he/she plays any card, but to make the game more
interesting and challenging, one suit is named a trump suit which means that if a player plays a
card from the trump suit, it always wins the trick. If two cards from the trump suit are played, the
highest card within the trump suit wins the trick. Obviously, the team with the most tricks wins
the hand.
The passage implies that
- A. Playing bridge requires concentration.
- B. Bridge is an extremely easy game to play.
- C. Bridge is only for older people.
- D. Bridge is only for women.
Correct Answer: A
Rationale: The correct answer is A: 'Playing bridge requires concentration.' The passage mentions that Bridge requires the player's undivided attention, indicating that concentration is necessary to play the game effectively. The intricate details provided about the rules and gameplay of Bridge emphasize the need for focus and mental engagement. While the passage does not suggest that Bridge is easy or exclusively for older people or women, it highlights the complexity and attention required to excel in the game.
A BIT ABOUT BICYCLES
Today, bicycles are so common that it's hard to believe they haven't always been around. But two hundred years ago, bicycles didn't even exist, and the first bicycle, invented in Germany in 1818, was nothing like our bicycles today. It was made of wood and didn't even have pedals. Since then, however, numerous innovations and improvements in design have made the bicycle one of the most popular means of recreation and transportation around the world. In 1839, Kirkpatrick Macmillan, a Scottish blacksmith, dramatically improved upon the original bicycle design. Macmillan's machine had tires with iron rims to keep them from getting worn down. He also used foot-operated cranks like pedals, so his bicycle could be ridden at a quick pace. It didn't look much like a modern bicycle, though, because its back wheel was substantially larger than its front wheel. In 1861, the French Michaux brothers took the evolution of the bicycle a step further by inventing an improved crank mechanism. Ten years later, James Starley, an English inventor, revolutionized bicycle design. He made the front wheel many times larger than the back wheel, put a gear on the pedals to make the bicycle more efficient, and lightened the wheels by using wire spokes. Although this bicycle was much lighter and less tiring to ride, it was still clumsy, extremely top heavy, and ridden mostly for entertainment. It wasn't until 1874 that the first truly modern bicycle appeared on the scene. (14) Invented by another Englishman, H.J. Lawson, the "safety bicycle" would look familiar to today's cyclists. This bicycle had equal-sized wheels, which made it less prone to toppling over. Lawson also attached a chain to the pedals to drive the rear wheel. With these improvements, the bicycle became extremely popular and useful for transportation. Today they are built, used, and enjoyed all over the world.
What was the author's intention in the passage about bicycles?
- A. Learn how to repair modern bicycles
- B. Understand a bit about the history of bicycles
- C. Compare different types of bicycles
- D. Discover the latest bicycle technologies
Correct Answer: B
Rationale: The correct answer is B: 'Understand a bit about the history of bicycles.' The passage provides a historical overview of the evolution of bicycles, starting from their early designs to the development of modern bicycles. It highlights key innovations and improvements in bicycle design over time. The focus is on informing readers about the origins and advancements in bicycle technology rather than teaching them how to repair bicycles, comparing different types, or discussing the latest technologies. Therefore, the main purpose of the passage is to provide insight into the history of bicycles.
Nurseries
If you thought nurseries were just for babies, well, think again! Being special kinds of farms, nurseries are used to raise plants in mass quantities. Plants, trees, and shrubs are typically grown in nurseries and then sold to farmers and gardeners to plant in homes, businesses and farms. Most nurseries are found in the more rural parts the country because much land is required to have a viable nursery. If a nursery sells plants to others, it must obtain a special permit from the local city or county, which keeps the competition fair and does not saturate the market with a large number of nurseries selling similar products.
Also on the grounds of nurseries are greenhouses which are made of glass or plastic panes that protect the plants from weather elements that may harm them and cause them not to grow and develop. The glass panels in greenhouses allow for sunlight to enter and moisture to be trapped inside. This creates a tropical environment which allows orchids and poinsettias to grow. It ensures that vegetables and fruits will grow large, which makes them valuable to farmers.
The author implied that:
- A. Nurseries are helpful for farmers.
- B. Nurseries are a waste of resources.
- C. Nurseries are only useful for large-scale commercial operations.
- D. Nurseries are unnecessary and rarely used.
Correct Answer: A
Rationale: The correct answer is A: 'Nurseries are helpful for farmers.' The passage discusses nurseries being special farms used to raise plants in mass quantities, which are then sold to farmers and gardeners for planting in various settings. The author highlights the importance of nurseries in providing plants, trees, and shrubs to farmers, businesses, and individuals, indicating that nurseries play a crucial role in supporting agriculture and horticulture. This is further reinforced by the mention of greenhouses within nurseries that help protect plants and create optimal growing conditions, ensuring the success of various crops. Therefore, the implication is that nurseries are beneficial and essential for farmers and those involved in planting and cultivation.
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