One of the most famous scientists to study adaptations was Charles Darwin. He was born in England in 1809. He wasn’t the best st

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问题 One of the most famous scientists to study adaptations was Charles Darwin. He was born in England in 1809. He wasn’t the best student in his school, but when he was 16, his lather sent him to a medical school. Charles liked spending time outdoors observing nature more than attending medical classes. He dropped out without graduating.
   Next, Charles’ father sent him to school to become a minister. This time he made it to graduation. But he didn’t want to do the work of a minister. His friends encouraged him to follow his interest in science.
   After graduation, Charles was invited to sail on the Beagle as an unpaid scientist. He wasn’t the first choice, but he was the lucky one to go. The Beagle was to travel to South America and then around the world. The crew’s task was to make maps of the places they visited.
   On December 27th, 1831, Charles Darwin sailed from England on the Beagle. The trip was planned to last two years. In fact, it lasted five. During this time, he saw many amazing things. He collected lots of plants and animals and took them back to England to study.
   Twenty-three years later, Darwin published an scientific paper with another man named Wallace. Darwin described how some animals have adaptations that help them survive. They are passed on to offspring. Darwin’s ideas about adaptations are still very important to the study of living things.
When Darwin published the scientific paper, he was ______ years old.

选项 A、twenty-three
B、twenty-two
C、forty-five
D、fifty

答案D

解析 根据全文可知Darwin出生于1809年,在1831年出发进行科学考察,当时他22岁,5年之后他的考察工作结束,23年之后他出版了科学论文,也就是说他此时是50岁,故选D。
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