【单选题】《时代广场的蟋蟀》中柴斯特最喜欢吃()。
【简答题】Exercise B: Complete the following sentences with what you have remembered. 1.Once you get to the airport, it is 1_____ the tour operator to 2___you get safely to your destination. 2. Excursions, loca...
【判断题】在葡萄糖酸锌的制备实验中,可以使用热水将残留在蒸发皿内的葡萄糖酸锌清洗干净
【简答题】若函数y=2tanωx的最小正周期为2π,则函数y=sin ωx+ 3 cosωx 的最小正周期为______.