【单选题】市场上某种商品的销售出现 “供不应求”的现象是由于
【判断题】周期大于4的完美序列已经证明不存在。()
【单选题】In order not to , he spent the whole night preparing for the speech of the next day. [ ]
【单选题】In order not to _____, he spent the whole night preparing for the speech of next day. [ ]
【单选题】_____ teaching in a university, he also spent some time teaching in a night school.
【单选题】It is on a winter night ___he spent with me last night.
【单选题】He spent two hours ______ his homework last night.
【单选题】市场上某种商品的销售出现“供不应求”的现象是由于( )。
【简答题】A.He spent all the time working on it. B.He worked on it at night and slept during the day. C.He put the objects inside the boxes. D.He collected and rearranged pictures.