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| 1. |
He was a Canadian voyager who is known for his part in experiments on digestion in humans, conducted on him by the American Army physician William Beaumont between 1822 and -1833. Who was he? |
| A. | Charles Darwin |
| B. | Alexander Fleming |
| C. | Stephen Jay Gould |
| D. | Alexis St. Martin |
| Answer» E. | |