71. The Reading team and the American meteorologists presented different results in investigating ____.

1. how far people can run per second in a downpour
2. the benefits of running for shelter in a downpour
3. whether people can run fast in a downpour
4. the average walking pace in a downpour

72. According to the American researchers, the Reading team made an error in calculating ____.

1. the average walking pace
2. the amount of the rainfall
3. the time and distance
4. the running speed

73. Which of the following, according to the American researchers, gets the least wet?

1. Running in drizzle.
2. Walking in drizzle.
3. Running in heavy rain.
4. Walking in heavy rain.

74. They verified their model predictions by experimenting ____.

1. on themselves
2. with a satellite
3. on the twins of the same size
4. with sophisticated calculating devices

75. The similar results, according to Belcher, refer to ____.

1. the amount of rain water absorbed
2. the average running speed
3. the average walking pace
4. all of the above

(Reference keys.)