In a certain room, all except 18 of the people are over 50 years of age. If 15 of the people in the room are under 50 years of a

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问题 In a certain room, all except 18 of the people are over 50 years of age. If 15 of the people in the room are under 50 years of age, how many people are in the room?

选项 A、27
B、30
C、33
D、36
E、It cannot be determined from the information given.

答案E

解析在某一房间中，除了18个人外其余人的年龄都超过50岁。若房间里小于50岁的人数为15，那么该房间里总共有多少人?
解：本题的正确答案为(E)。该题根本未涉及50岁以上的人数，故不能确定。

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In a certain room, all except 18 of the people are over 50 years of age. If 15 of the people in the room are under 50 years of a

GRE QUANTITATIVE

GRE

Youmust______thefactsandshouldnotrunawayfromthetruth.

Toimprovethe______isregardedasagoodmethodtoincreasethefarmer’sincomeinthesouthpartofthecountry.

WhentheUnitedStatesCongresscreatedYellowstoneNationalParkin1872,thegoalwastosetasideaplacewhereAmericanscou

InWesternculture,anengagementbeginswith"yes"toasimplequestion:"Willyoumarryme?"Theseheart-stoppingwordsoften

Worldwidethereareprobably70to100sharkattacksannuallyresultinginabout5to15deaths.Wesay"probably"becausenota

Iamafraidthathisphonenumberhasslippedmy______forthemoment.

Thenumberofmembersintheclub________totwohundred.

Ourpreferencesforcertaincolorsare______accordingtothepassage.Whichofthefollowingcouldbethemostsuitabletitle

________gotonthetrainwhenitstartedtomove.

Whatistheareaoftheshadedfigure?

标准群钻在后面上磨有两边对称的分屑槽。()

大面积烧伤后2天内，最主要的全身改变是

经行泄泻病因病机描述错误的是

首先提出积聚的病名的医著是()

如图所示(图中单位：mm)，阶梯状圆截面钢杆，已知钢的弹性模量E=200GPa，则此钢杆的轴向变形为()。

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