8月3日 GMAT数学逻辑每日一练

　　8月3日 GMAT数学逻辑每日一练

　　【数学】

　　When positive integer x isdivided by positive integer y, the remainder is 9. If x/y = 96.12, what is the value of y?

　　A. 96

　　B. 75

　　C. 48

　　D. 25

　　E. 12

　　【逻辑】

　　A society’s infant mortality rate is an accepted indicatorof that society’s general health status. Even though in some localities in theUnited States the rate is higher than in many developing countries. In theUnited States, overall the rate has been steadily declining. This declines doesnot necessarily indicate, however, that babies in the United States are now, onthe average, healthier at birth than they were in the past.

　　Which one of the following reasons, if true, most stronglysupports the claim made above about the implications of the decline?

　　A. The figure forinfant mortality is compiled as an overall rate and thus masks deficiencies inparticular localities.

　　B. Low birth weightis a contributing factor in more than half of the infant deaths in the UnitedStates.

　　C. The United Stateshas been developing and his achieved extremely sophisticated technology forsaving premature and low-birth-weight babies, most of whom require extendedhospital stays.

　　D. In eleven statesof the United States, the infant mortality rate declined last year.

　　E. Babies who do notreceive adequate attention from a caregiver fail to thrive and so they gainweight slowly.

　　答案

　　【数学】

　　参考答案：B

　　题目翻译：X/Y=96.12，X/Y余数是9。

　　题目全解：X=96.12Y=96Y+0.12Y=96Y+9。所以Y=75。

　　【逻辑】

　　参考答案：C

　　思路：as the passage suggests, the decline, in the author's opinion, does not indicate that the babies are healthier than b4.so ,in support of this conclusion ,we must show that though the babies are not healthier but they survive.

　　A is skeptical about the accuracy of the statistics .

　　B gives us a piece of irrelevant information.

　　D is also irrelevant. So is e.

　　C tells us why unhealthy babies can survive and the death rate declines.

　　C is the right answer.

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