【单选题】Robert found ______and called out.
【判断题】We can infer that today's baseball player's inappropriate behavior has made baseball less popular and less respectable.
【判断题】Today’s preeminent spectator game in America is baseball.
【单选题】气管镜检辨认左、右主支气管起点的标志是:
【判断题】焊工进行安全技术培训的主要目的是为了能上岗。
【单选题】—Is this your baseball? —No, it’s Bob’s. Baseball is _________ favorite.
【单选题】按传输模式分类, 光缆可以分为( )两类。