An Exact Number
A tourist was visiting New Mexico and was amazed at the dinosaur bones lying about.
"How old are these bones？" the tourist asked an elderly Native American, who served as a guide.
"Exactly one hundred million and three years old.
"How can you be so sure？" inquired the tourist.
"Well," replied the guide, " a geologist came by here and told me these bones were one hundred million years old, and that was exactly three years ago.
（1） New Mexico 新墨西哥（美国州名）
（2） be amazed at 对…感到惊诧
（3） dinosaur n.恐龙（已绝迹的巨大爬行动物）
① The tourist was frightened by the dinosaur bones lying about.
② The elderly native American served as a guide.
③ The guide knew exactly how old the bones were.
④ The guide told the tourist the history of the bones.
⑤ The guide believed what the geologist had said.