|
18. How many lines are there in the diagram?
22
23
24
25
19. These are four pictures of a cube seen from different angles. There are six letters, A, B, C, D, E, F and G, on each of the six faces of the cube respectively. Please tell which letter is on the opposite face to the face with “B”.
F
E
C
D
20. The black block is 3 times heavier than a white one. Where should the black block be placed to make the two ends balanced?
On the first grid from the left
On the second grid from the left
On the third grid from the left
On the fourth grid from the left
21. How many bricks are lost ？
156
157
158
159
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发表于 2008-8-19 14:37:43
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