bolt
n.螺栓;插销 vt.闩，栓住 vi.冲出去，逃跑
The horse reared up and bolted.马儿扬起前腿狂奔起来。
bonus
n.奖金，红利;额外给予的东西
Long-term savers qualify for a cash bonus.长期储户可获现金红利。
boom
n.激增，繁荣;隆隆声 vi.激增迅速发展
The boom has created job opportunities.经济繁荣创造了就业的机会。
cheer
vt.使高兴;向…喝彩 vi./ n.欢呼，喝彩
A great cheer went up from the crowd.人群里爆发出巨大的欢呼声。
choice
n.选择(权);供选择的东西 a.上等的，精选的
You have a choice – you can stay here on your own or you can come with us.你自己选择：可以独自留在这里，也可以和我们一起去。
