GMAT逻辑加强题例题二

　　备考GMAT逻辑的过程中，对于各部分的题型要有充分的了解，这样才能够在考试中能够更好地拿到分数。下面新东方在线GMAT频道为大家整理了一些相关的例题，供大家练习。

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　　5.(Z)In parts of South America, vitamin-A deficiency is a serious health problem, especially among children. In one region, agriculturists are attempting to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in beta-carotene, which the body converts into vitamin A. The plan has good chances of success, since sweet potato is a staple of the region’s diet and agriculture, and the varieties currently grown contain little beta-carotene.

　　Which of the following, if true, most strongly supports the prediction that the plan will succeed?

　　A. The growing conditions required by the varieties of sweet potato currently cultivated in the region are conditions in which SPK004 can flourish.

　　B. The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in color and texture, so traditional foods would look somewhat different when prepared from SPK004.

　　C. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.

　　D. The varieties of sweet potato currently cultivated in the region contain some important nutrients that are lacking in SPK004.

　　E. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.

　　6.(Z)The spacing of the four holes on a fragment of a bone flute excavated at a Neanderthal campsite is just what is required to play the third through sixth notes of the diatonic scale—the seven-note musical scale used in much of Western music since the Renaissance. Musicologists therefore hypothesize that the diatonic musical scale was developed and used thousands of years before it was adopted by Western musicians.

　　Which of the following, if true, most strongly supports the hypothesis?

　　A. Bone flutes were probably the only musical instrument made by Neanderthals.

　　B. No musical instrument that is known to have used a diatomic scale is of an earlier date than the flute found at the Neanderthal campsite.

　　C. The flute was made from a cave-bear bone and the campsite at which the flute fragment was excavated was in a cave that also contained skeletal remains of cave bears.

　　D. Flutes are the simplest wind instrument that can be constructed to allow playing a diatonic scale.

　　E. The cave-bear leg bone used to make the Neanderthal flute would have been long enough to make a flute capable of playing a complete diatonic scale.

　　7.(Z)Studies in restaurants show that the tips left by customers who pay their bill in cash tend to be larger when the bill is presented on a tray that bears a credit-card logo. Consumer psychologists hypothesize that simply seeing a credit-card logo makes many credit-card holders willing to spend more because it reminds them that their spending power exceeds the cash they have immediately available.

　　Which of the following, if true, most strongly supports the psychologists’ interpretation of the studies?

　　A. The effect noted in the studies is not limited to patrons who have credit cards.

　　B. Patrons who are under financial pressure from their credit-card obligations tend to tip less when presented with a restaurant bill on a tray with credit-card logo than when the tray has no logo.

　　C. In virtually all of the cases in the studies, the patrons who paid bills in cash did not possess credit cards.

　　D. In general, restaurant patrons who pay their bills in cash leave larger tips than do those who pay by credit card.

　　E. The percentage of restaurant bills paid with given brand of credit card increases when that credit card’s logo is displayed on the tray with which the bill is prepared.

　　8.(Z)Studies in restaurants show that the tips left by customers who pay their bill in cash tend to be larger when the bill is presented on a tray that bears a credit-card logo. Consumer psychologists hypothesize that simply seeing a credit-card logo makes many credit-card holders willing to spend more because it reminds them that their spending power exceeds the cash they have immediately available.

　　Which of the following, if true, most strongly supports the psychologists’ interpretation of the studies?

　　A. The effect noted in the studies is not limited to patrons who have credit cards.

　　B. Patrons who are under financial pressure from their credit-card obligations tend to tip less when presented with a restaurant bill on a tray with credit-card logo than when the tray has no logo.

　　C. In virtually all of the cases in the studies, the patrons who paid bills in cash did not possess credit cards.

　　D. In general, restaurant patrons who pay their bills in cash leave larger tips than do those who pay by credit card.

　　E. The percentage of restaurant bills paid with given brand of credit card increases when that credit card’s logo is displayed on the tray with which the bill is prepared.

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