Step I Warming up
1. characteristic
① n. a quality or feature of sth. or someone that is typical of them and easy to recongnize.特征；特性
What characteristics distinguish the Americans from the Canadians.
② a. very typical of a particular thing or of someone’s characer 典型性的，
Such bluntness is characteristic of him.
Windy days are characteristic of March.
characteristic与character
characteristic是可数名词，意为“与众不同的特征“
character表示（个人、集体、民族特有的）“性格、品质”，还意为“人物；文字”
What you know about him isn’t his real character.
2. put forward: to state an idea or opinion, or to suggest a plan or person, for other people to
consider提出
