There are six houses in the forest. Six kinds of animals live there. The bear’s house number is No.13. The monkey’s number is No.16. The sheep’s house is not next to the rabbit’s and the monkey’s. The number of the elephant’s house plus (加上) 2 is the cat’s. There are two houses between the rabbit’s and the elephant’s. Which numbers do they live in?
看圖回答:
How many triangles(三角形)are there in the picture?( )
(A) seven
(B) eight
(C) nine
(D) ten