【单选题】—I can’t repair your bike until tomorrow, I’m afraid. —That’s OK, there’s _________.
【单选题】当四格表的周边合计不变时,如果某格子的实际频数有变化,则其理论频数:
【简答题】It’s not easy to be an astronaut’s son. Everybody expects you to be special or perfect. I often wonder how my father ever had a son like me. I mean he’s so special and so good at everything he does. E...
【单选题】当四格表的周边合计不变时,如果某格的实际频数变大,则其理论频数
【单选题】He's ______ by the news that I didn't know what to say.
【单选题】当四格表的周边合计不变时,如果某一个格子实际频数有变化,则其理论频数
【单选题】当四格表的周边合计不变时,如果某格的实际频数有变化,则其理论频数是