题目

“How long have you stayed in this hotel?” “Not long, just ______ this Monday.” A. on                                                       B. since C. until                                                     D. after   答案：B“他的发明解决了全世界几十亿人口的吃饭问题。”他被誉为“杂交水稻之父”，他是A．邓稼先B．刘湘云C．钱学森D．袁隆平