如图所示，生活中有很多方法都可以将斧头安紧在斧柄上，下面四种方法能更好地利用斧头惯性的是（   ）

下列现象属于违法行为的是（   ）
①公民上飞机前，治安警察检查公民的身份证和所带包裹　②工程队老王把丁某父亲寄来的汇款单偷藏起来　③学生张某为集邮而偷拆同班同学的信件　④办公室秘书拆阅领导的家信 

    BUS SERVICE

    New York City — Brennan, New Jersey

    (Trip time: 30 minutes each way )

    Timetable

    Buses leave the Railway Station, New York 7:00 a.m. and every half-hour thereafter(此后) until 11:30 p.m. (7 days a week).

    Buses leave Brennan Station 20 minutes before and after every hour from 6:20 a.m. to 10:40 p.m. (7 days a week ).

    Evening rush hours(5:00 p.m. to 7:00 p.m.) buses leave the Railway Station, New York every 15 minutes (Monday — Friday).

    Holidays: buses leave every hour on the hour time, each direction.

All tickets must be bought at Window 12, the Railway Station, New York, or at the Brennan Station Window before boarding buses.