试题与答案

指出下列各组命题中p是q的什么条件.(充分不必要条件,必要不充分条件,充要条件,

题型:解答题

题目:

指出下列各组命题中p是q的什么条件.(充分不必要条件,必要不充分条件,充要条件,既不充分又不必要条件)
(1)p:数a能被6整除;q:数a能被3整除;
(2)p:x>1;q:x2>1;
(3)p:△ABC有两个角相等;q:△ABC是正三角形;
(4)p:|a•bX|=a•bX;q:a•bX>0;
(5)在△ABC中,p:A>B;q:BC>AC;
(6)p:a<b;q:
a
b
<1.

答案:

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答案:D

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    The mobile phone is a useful thing, but maybe I don't know h  1   to use it. Sometimes it makes things

difficult for me.

    One day I wanted to see my friend nearby. I could a  2   at his house in five minutes, but I looked at my

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    I asked him if he was at home in the afternoon. And he said-at 1  6   I thought he said-he would be at home

all afternoon. So I went to his house, but then I found n  7   in. I called him for the fourth time. This time I got

so angry that I s  8  , "You are not at home? But you just told me over the telephone that you would be at home

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    I went back to my room, sat down in front of the mobile phone and looked at it. What e 10   could I do?

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1.                 2.                 3.                 4.                 5.                

6.                 7.                 8.                 9.                10.             

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