多选题As scientists at the Smithsonian have observed, the institution"s range of scientific inquiry may be ______, but its financial resources are far less ______.

多选题Lourdes" teacher praised her geography project for its ______: he had rarely seen one so cleverly inventive.

多选题Excessive secrecy tends ______ excessive curiosity and thus serves to ______ the very impulses against which it guards.

多选题The success of fluoride in combating dental decay is well established and, without a doubt, socially beneficial. However, fluoride's toxic properties have been known for a century. In humans excessive intake (for adults, over 4 milligrams per day) over many years can lead to skeletal fluorosis, a well-defined skeletal disorder, and in some plant species, fluoride is more toxic than ozone, sulfur dioxide, or pesticides. Some important questions remain. For example, the precise lower limit at which the fluoride content of bone becomes toxic is still undetermined. And while fluoride intake from water and air can be evaluated relatively easily, it is much harder to estimate how much a given population ingests from foodstuffs because of the wide variations in individual eating habits and in fluoride concentrations in foodstuffs. These difficulties suggest that we should by wary of indiscriminately using fluoride, even in the form of fluoride-containing dental products. One function of the second paragraph of the passage is to A. raise doubts about fluoride's toxicity. B. introduce the issue of fluoride's toxicity. C. differentiate a toxic from a nontoxic amount of fluoride. D. indicate that necessary knowledge of fluoride remains incomplete. E. discuss the foodstuffs that are most likely to contain significant concentrations of fluoride.

多选题That bison congregate in large herds suggests that they are ______ animals, yet individually they appear _______, seemingly indifferent to their circumstances.

多选题There is perhaps some truth in that waggish old definition of a scholar—a siren that calls attention to a fog without doing anything to ______ it. A. portray B. cause C. deepen D. dispel E. dissipate F. thicken

多选题The eager members of the audience found the lecture topic ______, but unfortunately the lecturer"s droning voice had a ______ effect.

多选题Because of their spare, white appearance, ancient Greek statues in modern museums are often considered ______; yet newly unearthed antiquities showing traces of bright pigment are not so ______.

多选题Maria never ______ advice: she prefers to solve her problems without help from others.

多选题Noting that few employees showed any ______ for complying with the corporations new safety regulations, Peterson was forced to conclude that acceptance of the regulations would be ______, at best. A. enthusiasm B. indifference C. rectitude D. grudging E. indeterminate F. unavoidable

多选题Although Keller achieved national ______ as a hero, his lamentable ______ in the political arena soon became painfully apparent.

多选题Improvements in refrigeration and transportation in the nineteenth century ______ the ______ of available food for many families in the United States.

多选题To prevent some conflicts of interest, Congress could prohibit high-level government officials from accepting positions as lobbyists for three years after such officials leave government service. One such official concluded, however, that such a prohibition would be unfortunate because it would prevent high-level government officials from earning a livelihood for three years. The official's conclusion logically depends on which of the following assumptions? A. Laws should not restrict the behavior of former government officials. B. Lobbyists are typically people who have previously been high-level government officials. C. Low-level government officials do not often become lobbyists when they leave government service. D. High-level government officials who leave government service are capable of earning a livelihood only as lobbyists. E. High-level government officials who leave government service are currently permitted to act as lobbyists for only three years.

多选题Changes of fashion and public taste are often ______ and resistant to analysis, and yet they are among the most ______ gauges of the state of the public's collective consciousness. A. transparent B. ephemeral C. permanent D. underutilized E. problematic F. sensitive

多选题Only recently created, this orchid is a ______, a plant produced by deliberately crossbreeding two different varieties of flowers.

多选题By idiosyncratically refusing to dismiss an insubordinate member of his staff, the manager not only ______ established policy, but he also ______ his heretofore good chances for promotion. A. instituted B. contravened C. delimited D. bettered E. protected F. jeopardized

多选题The magazine article discussing the governor"s financial dealings contained ______ statements, but it stopped short of being ______.

多选题Frequently used as a spice, ginger also has ______ properties: it can be used to help treat coughs, colds, and upset stomachs.

多选题Royal garments found in the tombs of ancient Egyptians reveal no evidence of having been mended; this discovery suggests that the rulers of Egypt opted for ______ rather than ______.

多选题Most of the students found the lecturer"s speech ______; in fact, it was so dull that some even nodded off.