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The ponderosa pine is _________________ of most of the timber used by forest-product firms in the black hills of South Dakota.
Computers that once took up entire rooms are now ______________ to put on desktops and into wristwatches.
According to some educators, the goal of teaching is to help students learn what _______________ to know to live a well-adjusted and successful life.
The sapphire’s transparency to ultraviolet and infrared radiation makes _____________ in optical instruments.
______________ initial recognition while still quite young.
Time is Up!
Mango trees, ________________densely covered with glossy leaves and bear small fragrant flowers, gores rapidly and can attain heights of up to 90 feet.
________________________, the Canadian composer Barbara Pent land wrote four symphonies, there concertos, and an opera, among other works.
The chinos mountains in Big Bend National Park in Texas were created by volcanic eruptions that occurred ____________________________
In bas-relief sculpture, a design projects very slightly from its background, __________________ some coins.
Alaska found the first years of its statehood costly because it had to take over the expense of services _________________ previously by the federal government.
With age, the mineral content of human bones decreases_______________ Them more fragile
Not until Kentucky’s mammoth cave had been completely explored in 1972 _____________ .
The first explorer ________________ California by land was Jedediah Strong Smith, a trapper who crossed the southwestern deserts of the United States in 1826.
Written to be performed on a ____________________ Thornton Wilder’s play Our Town depicts life in a small New England Community.
_______________ many copper mines in the state of Arizona, a fact which contributes significantly to the state’s economy.
While verbalization is the most common form(A) of language in existence(B), humans make use of many system(C) and techniques to express(D) their thoughts and feelings.
In cases of(A) minor injury to(B) the brain. Amnesia is likely(C) to be a temporarily(D) condition.
The system(A) of chemical symbols, first devised about 1800 gives a concise and instantly(B) recognizable description of a(C) element or(D) compound.
A variation(A) of collodion photography was the tintype, which(B) captured images on a black or(C) dark brown metal plate instead(D) from on glass.
Kangaroos use their(A) long and powerful(B) tails for balance(C) themselves when sitting(D) upright or jumping.
The United States census for(A) 1970 show(B) that the French-speaking residents of Louisiana were(C) one of the country’s most compact regional linguistic minorities(D).
Philosophy is the study(A) of the nature of reality, knowledge, existent(B), and ethics(C) by means(D) of rational inquiry.
Hard(A) and resistant to corrosion, bronze is traditionally(B) used in bell casting and is the material used widely most(C) for metal sculpture(D).
The population of California more than(A) doubled during the(B) period 1940-1960, creating problems in road-building and provide(C) water for its arid southern section(D).
Although based it on(A) feudal models, the colony of Pennsylvania developed(B) a reputation for(C) a progressive political(D) and social outlook.
To commemorating(A) the dog Nipper, whose(B) picture appears(C) on old gramophone records(D), a brass plaque marks his grave.
The Appalachian Mountains formations(A) a natural barrier between(B) the eastern seaboard and the vast lowlands(C) of the continental interior(D) of North America.
Numerous performances(A) of Mozart's operas was performed(B) in Austria in the beginning(C) of the nineteenth century(D).
When used(A) as food additives(B), antioxidants prevent fats and oils from become(C) rancid when exposed to air, and thus(D) extend their shelf life.
One of the problem(A) of United States agriculture that has persisted since the(B) 1920’s until the present day is the tendency of farm income to lag behind(C) the costs of production(D).
A few and(A) the 50 stamps(B) that my sister had(C) were either(D) for sale or trade.
Despite(A) the fact that lemurs are general(B) nocturnal, the ring-tailed lemur travels(C) by day in bands of four to(D) twelve individuals.
A(A) clap of thunder usually follows(B) lighting by five second(C) for(D) every mile between the flash.
Acrylic paints(A) is(B) either applied using(C) a knife or diluted and spread(D) with a paintbrush.
Some marine invertebrates, such as the(A) sea urchin and the starfish, migrate(B) from deep water to shallow(C) during spring and early summer to spawning(D).
The notion(A) that students are not sufficiently involved(B) in their education is one reason for the recently(C) surge of support for(D) undergraduate research.
Wampum, beads used as a form(A) of exchange by(B) some Native Americans, was made of bits of(C) Sea shells cut, drill(D), and strung into belts.
Over(A) the course of history, many civilization(B) developed their own(C) number systems(D).
Proper city planning provides for(A) the distribution(B) of public utilities, public buildings, parks, and recreation centers(C), and for adequate and the inexpensive(D) housing.
Most(A) traditional dances are made up of(B) a prearranged series of steps and movements, but modern dancers are generally free to(C) move as they choice(D).