脱式计算。
756÷7÷6 840÷5×2 198÷(3×3)
756÷7÷6
=108÷6
=18
840÷5×2
=168×2
=336
198÷(3×3)
=198÷9
=22
待：dāi ____ dài____
咽：yàn____ yān____
丧：sāng____ sàng____
They were shocked at the____(令人恐惧的) news that they had cheated so much money.
惟商鞅变法，不顾人言，只能骤至富强，亦以召怨天下。……虽得天下，旋接踵而亡。有人认为秦朝灭亡的主要原因是因为商鞅变法，你是否同意这种观点？为什么？观点：原因：
