One, 1, D.2, D.3, A.4, D.5, c.

2. Actual area: 6 square meters.

Third, about 150 tiles are needed.

Fourth, the height of the chimney is 3 meters.

Fifth, it was originally planned to be completed in 25 days.

The air distance between VI, A and B is 750 kilometers.

P29:

One, 1, I think the people who like basketball the most must be the most.

2, it is impossible to judge, because "other" can become less than badminton. For example, volleyball is 3% and long jump 17%.

2. 1, 18.

2,6.

3, 160.

4,38. 1.

Three, 1, I think Huang Fang's grades have improved rapidly.

2. Huang Fang's grades improved even faster. (draw by yourself)

Oral forest (transverse): 0.90.99 3286.95100121015.6.