Unit 2 crossing limits
Words and Expressions
1.evaluate---evaluation 估价；评价
"The research project has only been under way for three months, so it's too early to evaluate its success."
"这个研究项目进行了不过三个月,所以要对它的成绩作出评价为时尚早。"
2.various adj.各种各样的
There are various colors to choose from. 有各种各样的颜色可供选择。
various people
vary vt.vi
The weather varies from day to day. 天气一天天变
variety变化； 多样性 种种；各类
The shopping-centre sells a variety of goods.
At school we learn a variety of things.
（与of连用）变种
new varieties of wheat小麦的新品种
