几道智力题 英语what changes a pear into a pearl?what has a neck but no throat?

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• 几道智力题 英语what changes a pear into a pearl?what has a neck but no throat?
• 一些英语谜语1.What table is in the field?2.What is the only thing you can break when you say its name?3.What changes a pear into a pearl?4.What question can never be answered by"YES"?5.Where can you always find money?6.What is the smallest bridge in the world?7.When do 2 and 2 make more than 8.I have cities but no houses,forests but no tree,rivers without water.What am 9.I am something that has teeth but can't eat.What am
• 几道英语的智力题1.which of the following letters does't go on with others?( )A,H,I,M,O,S,T,U,V,W,X,YA.A I O U B.A H W C.U V W D.S X Y M2.在下面括号中填入2个字母,使它们与括号左边的字母形成一个1字单词,同时又与括号右边的字母形成另一个4字单词,且如果将填入的字母按从左到右,从上到下的顺序排列,又会形成一个6字单词.PA( )UNMO( )ALBR( )ITANSWER:3.观察下图,用其中的字母拼写出一个10字单词（每个字母只能用一次）ST SP C RI R U EANSWER:还有一题4.根据提示，分别写出4个由6个字母组成的单词，单词中的XYZ表示相同的三个字母。XYZ*** 动脉 *XYZ** 劈开**XYZ* 壁炉 ***XYZ 以智取胜ANSWER:补充：第一题的选项是：A.A I O U B.A H W C.U V WD.S X Y M第三题的字母排列形状是金字塔
• 已知数列{an}中,a1=1,an+a（n+1）=2^n（n∈N*）,bn=3an（1）试证数列{an-1/3*2^n}使等比数列,并求数列{bn}的通项公式.（2）在数列{bn}中,是否存在连续三项成等差数列?若存在,求出所有符合条件的项；若不存在,说明理由.