The weather at weekend is quite suitable to go outside and play for fun.

Then three friends(Xiaoming&Xiaohua&Daidai呆呆) went together to a fun fair, and they had a whale of a time there indeed.

At the time when they wanted to leave the fun fair, they found there was a test machine for intelligence quotient in the corner, they all three were excited and ran immediately up to the test machine, as they were anxious to know the result of their own IQ.

Xiaoming was the first one, who stood on the machine, and the number of his intelligence quotient shows 102; it's Xiaohua turn to test, and his number is 105 a little higher than Xiaoming's; the last one was Daidai(呆呆), when he stood on the machine, the machine showed nothing but uttered a weird sound, and he didn't know what was wrong with the machine, then he tried again to stand on it, and after a few minutes the machine finally shows: please don’t use a stone to make trick here.