【单选题】根据材料回答下列各题: Flying over a desert area in an airplane, two scientists looked down with trained eyes at trees and bushes. After an hour' s flight, one of the scientists wrote in his book, 'Look here for...
【简答题】When Kyle walked into Paul’s Pet World, he looked very anxious. He walked quickly to the store owner, Paul. Paul jumped out of his seat to greet Kyle. He was the store’s first customer of the day. “Go...