【单选题】The box on the floor is ______ heavy. I can't carry it. [ ]
【单选题】Feulgen反应是一种经典的细胞化学染色方法,常用于细胞内()
【单选题】变压器并联条件中必须满足的条件是( )。
【单选题】Feulgen反应是一种经典的细胞化学染色方法,常用于细胞内( )
【判断题】《打火匣》中士兵和公主结了婚,士兵做了国王,三只狗成了贵宾。
【单选题】Feulgen反应是一种经典的细胞化学染色方法常用于()
【单选题】The boat is ______ small, we can't put _____ food in it. [ ]
【单选题】I'm sorry I can't go with you this weekend. I have ________ to do. [ ]