题目

在红粒高秆的麦田里，偶然发现一株白粒矮秆优质小麦，欲在两三年内能获得大量的白粒矮秆麦种，通常用的育种方法是( ) A．自交育种  B．诱变育种 C．人工嫁接  D．单倍体育种 答案：A阅读理解。     Harry likes talking too much. His father doesn't like him talking at table. One day at dinner,     Harry is ready to say something, but his father stops him.     After a while, they almost finish their dinner. Father asks,"Hi, my boy, what are you goingto say?"     "Dad, is a fly delicious?" says Harry. "Of course not," says his father. "Why do you ask me that?"    "A fly was in your bowl just now and you swallowed(吞)it,"says Harry. "Why didn't youtell me earlier?"     "You stopped me!"(     )1. At dinner a fly was in Harry's father's bowl.          (     )2. Harry likes talking only at table.                       (     )3. Harry asked his father if a fly was delicious.           (     )4. His father likes eating flies.                           (     )5. Finally, his father knew he ate a fly and was very happy.