Cinemark Theatre                       Cinemark Theatre
So Young                             America Dreams in China
May 29～June 2:                        June 6～17(not June 10, 11, 12, 15)
Evenings at 7.15 p.m. (May 29 at 7 p.m.)       June 6, 7, 8, 9, 16 at 7.45 p.m.
Tickets                                 June 17 at 5 p.m.
Weekdays: $27                          June 13, 14 at 8.00 p.m.
Sunday: $29                            Tickets
Weekdays: $24
Sat. & Sun. : $26
Cinemark discount(打折) card: 20% off 3 tickets

在冬天，装有一定水的热水瓶过一段时间后，软木塞不易拔出，这主要是由于（　　）

读“北美大陆沿40°N地形剖面图”，判断A山脉是：

5.6g含有杂质的铁片加到足量的稀硫酸中，共收集到0.19g氢气，该铁片中不可能含有的杂质是（）

四大洋中全部位于东半球的是（    ）