题目

The Photo ShootJeremy looked across the hot grassy land. South Africa was a long way from his hometown in America. “Ready?” Dad asked. “Ready,” Jeremy answered. They climbed into the old truck. Jeremy hardly ever spent time with his father, a famous wildlife photographer. So far, he wasn’t sure whether he liked following his dad around. The job seemed hard and boring.As the truck moved along the rough road, there was a big crash. The door had fallen off!“Now we can see better,” Dad laughed. Their guide Makalu threw the door into the back of the truck.They stopped near a watering 天然放射性元素衰变时能够放出的三种射线是（ ）A．α射线，β射线和γ射线B．α射线、X射线和紫外线C．β射线，红外线和紫外线D．γ射线、X射线和红外线