多选题Recently some scientists have concluded that meteorites found on Earth and long believed to have a Martian origin might actually have been blasted free of Mars's gravity by the impact on Mars of other meteorites. {{U}}This conclusion has led to another question:{{/U}} whether meteorite impacts on Earth have similarly driven rocks from this planet to Mars. According to astronomer S.A. Phinney, kicking a rock hard enough to free it from Earth's gravity would require a meteorite capable of making a crater more than 60 miles across. Moreover, even if Earth rocks were freed by meteorite impact, Mars' orbit is much larger than Earth's, so Phinney estimates that the probability of these rocks hitting Mars is about one-tenth as great as that of Mars' rocks hitting Earth. To demonstrate this estimate, Phinney used a computer to calculate where 1,000 hypothetical particles would go if ejected from Earth in random directions. He found that 17 of the 1,000 particles would hit Mars. The passage is primarily concerned with A. presenting an argument to support a particular hypothesis. B. suggesting an answer to a theoretical question. C. questioning the assumptions of a research project. D. criticizing experimental results. E. explaining the origin of certain scientific data.

多选题Although Michael"s invidious accusations aroused our ______, we managed to preserve our ______ and remain composed.

多选题Certain museum antiquities are of questionable legal status, tainted by histories of bribery, thievery, and other ______ activities.

多选题By portraying a wide spectrum of characters in his one-man show, John Leguizamo provides a ______ to the theater"s tendency to offer a limited range of roles to Latino actors.

多选题During the opera's most famous aria the tempo chosen by the orchestra's conductor seemed ______, without necessary relation to what had gone before. A. arbitrary B. capricious C. cautious D. compelling E. exacting F. meticulous

多选题From the 1900's through the 1950's waitresses in the United States developed a form of unionism based on the unions' defining the skills that their occupation included and enforcing standards for the performance of those skills. {{U}}This "occupational unionism" differed substantially from the "worksite unionism" prevalent among factory. workers.{{/U}} Rather than unionizing the workforces of particular employers, waitress locals sought to control their occupation throughout a city. Occupational unionism operated through union hiring halls, which provided free placement services to employers who agreed to hire their personnel only through the union. Hiring halls offered union waitresses collective employment security, not individual job security—a basic protection offered by worksite unions. That is, when a waitress lost her job, the local did not intervene with her employer but placed her elsewhere; and when jobs were scarce, the work hours available were distributed fairly among all members rather than being assigned according to seniority. The author of the passage mentions "particular employers" primarily in order to A. suggest that occupational unions found some employers difficult to satisfy. B. indicate that the occupational unions served some employers but not others. C. emphasize the unique focus of occupational unionism. D. accentuate the hostility of some employers toward occupational unionism. E. point out a weakness of worksite unionism.

多选题Just as such apparently basic things as rocks, clouds, and clams are, in fact, intricately structured entities, so the self, too, is not an "elementary particle", but is ______ construction. A. a complicated B. a convoluted C. a distorted D. an amorphous E. an illusory

多选题Scientific discoveries are often thought of as the result of ______ effort, but many discoveries have, in fact, arisen from ______ or a mistake.

多选题Anyone serving as transportation commissioner must become accustomed to public criticism, and indeed Henderson is now quite ______ it.

多选题The proposed research projects were praised as both ______ and ______: they were inexpensive yet promised to break new ground.

多选题 DirectiOns: For the following questions, select the two answer choices that, when used to complete the sentence, fit the meaning of the sentence as a whole and produce completed sentences that are alike in meaning.

多选题Sally could not ______ the family trip to Colorado, but her older brother Brad was able to ______ many of its details.

多选题Though surgeon and researcher Charles Drew never enjoyed celeb rity, he truly deserves to be ______ for his life"s achievements.

多选题Although many swimmers fear encountering jellyfish in the ocean, most species are actually ______ and do no harm to humans.

多选题Dave Anderson, founder of a national restaurant chain, promotes ________, encouraging others to start their own businesses.

多选题Critics dismissed the engineer"s seemingly creative design as being ______, that is, underdeveloped and lacking in sophistication.

多选题The politician was a ______ speaker whose debating skills were admired even by the ______ she outwitted.

多选题The participants in the study considered themselves ______ but in yielding to the wishes of the group, they were assuming ______ values.

多选题The experts could not believe that a beginner had created such an accomplished work: they found the idea ______.

多选题The archaeologist believed the coin she unearthed was ______ evidence, unquestionable proof that the site dated to the fourth century.