New words：

advance [ədˈvæns]
adj.预先的；事先的
n.进展；进步；提高；预付款；前进

Sample Sentences：

Advances in science help all humanity.
Advances in science benefit all humanity.
Please give us advance warning of any changes.
The heavy snow slowed down the advance of the rescue team.
He asked his boss for an advance on his salary to pay for his rent.

benefit [ˈbenəfɪt]
n.益处；优势；成效；福利费
v.对（某人）有用；使受益；得益于；得利于

humanity [hjuˈmænəti] n.人性；人类；人道；仁慈

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