单选题When 9 students took a zoology quiz with a possible score of 0 to 10 inclusive, their average (arithmetic mean) score was 7.5. If a tenth student takes the same quiz, what will be the least possible average score on the quiz for all 10 students? A. 6.5 B. 6.75 C. 7.0 D. 7.25 E. 7.5

单选题If n=6×15, which of the following are prime factors of n?

单选题FLEDGE:

单选题PROSCENIUM : STAGE ::

单选题Adeveloperhaslandthathasxfeetoflakefrontage.Thelandistobesubdividedintolots,eachofwhichistohaveeither80feetor100feetoflakefrontage.Ifofthelotsaretohave80feetoffrontageeachandtheremaining40lotsaretohave100feetoffrontageeach,whatisthevalueofx?A.400B.3,200C.3,700D.4,400E.4,760

单选题By forcing our surrender to the authority of the clock systematic timekeeping has imposed a form of------- on society

单选题OPERA : ARIA ::

单选题The author's analogy between the mail-sorting system and chemistry would be LESS accurate if which of the following were true?

单选题The sugar dissolved in water ______; finally all that remained was an almost ______ residue on the bottom of the glass.(A) quickly...lumpy(B) immediately...fragrant(C) gradually…imperceptible(D) subsequently...glassy(E) spectacularly...opaque

单选题PUNGENCY:(A) tastelessness(B) impassiveness(C) unimportance(D) monotony(E) repetitiveness

单选题Inthefigureabove,m//n.Whichoftheanglesaresupplementaryto∠1?A.∠2B.∠3C.∠5D.∠6E.∠7

单选题According to the passage, psychophysical parallelists would be LEAST likely to agree with which of the following views attributed to Spinoza?(A) Through a relationship of correlation, mental occurrences can only determine other mental occurrences.(B) Through a relationship of causation, physical occurrences can only determine other physical occurrences.(C) Mind and body exist in pre-established coordination provided by a third entity, transcendent intelligence.(D) Consciousness and extension, as separate finite qualities, may be described as distinct.(E) One of the necessary attributes of any divine essence is its infinitude.

单选题Eachintegerfrom1to50whoseunitsdigitisa3iswrittenonaslipofpaperandplacedinabox.Iftwoslipsofpaperaredrawnatrandom,whatistheprobabilitythatboththenumberspickedareprime?

单选题ENTOMOLOGY: INSECTS : :

单选题According to the passage, which of the following statements about temperature gradients is true?(A) These temperature gradients tend in most cases to be impossible to describe mathematically.(B) The lower the contrast between the extremes of the gradient, the lower the resulting velocity of the jet stream.(C) Jet streams are responsible for most of the north-south transfer of heat between the equator and the poles.(D) The temperature gradient tends, on a non-negligible level, to augment the effects of the earth's rotation.(E) The gradient typically refers to differences in jet stream velocity at various longitudinal positions around the globe.

单选题While forensic scientists commonly rely on fingerprints to help identify a Line person, it is not possible to use the same kind of technology with other species of mammals. Recently, however, a group of researchers from Tokyo developed a device that allows them to identify individuals of the endangered Ganges River (5) dolphin species. This underwater acoustic device measures the clicking sounds produced by the creatures and helps with identification and tracking, since each sound is as completely unique as a fingerprint. Ganges River dolphins are rare in that, unlike the majority of their counterparts, they live in rivers and lakes rather than oceans. The species is blind (10) and uses clicks to send out sonar pulses for guidance and to find food. In the past few decades, their numbers have decreased by 50 percent, because of fishing net entanglement, human predation, pollution, construction, or a combination of these factors. With this new acoustic technology, scientists hope to get a better idea of how many of these dolphins still exist, as well as their migration patterns (15) and feeding habits. In turn, this information may help scientists protect and conserve this unique species.

单选题Foranynumbersa,b,andc,Forwhichofthefollowingequationsisittruethatthereisexactlyonepositiveintegerthatsatisfiesit'?A.noneB.ⅠonlyC.ⅢonlyD.ⅠandⅢonlyE.Ⅰ,Ⅱ,andⅢ

单选题The argument of the passage best supports which of the following contentions concerning political art?(A) It has been considered to be more effective in producing change among certain political classes than among others.(B) Aesthetic judgments of artists are often positively reinforced by the political views of their critics.(C) Judgments of the value of an artist's work made by his or her critics must be discounted before a true judgment can be made.(D) In order to be highly regarded, an artist cannot be solely identified with one particular degree of political consciousness in her artwork.(E) Flexibility is the most valuable quality a political artist can have in maintaining the longevity of her career.

单选题PAINTER : CARICATURIST::(A) writer: essayist(B) sculptor : printmaker(C) critic : buffoon(D) amateur : dilettante(E) composer : librettist