7.burst ___ sth.　突然而猛烈地发出或产生某事物tre ______　将某人(某事物)当作中心或重点

centrate_______　专心致志于　 10.Tour de France　环法自行车赛

5. __________________ 长达1.6 米　　 6._______________首先；第一；原先

3.____________　记下；写下　 4. ___________122 years and 164 days 活了122岁零164天

1. ____________ 以…为背景　　 2. ________an argument 解决一个争论

15. We spent the morning_________ around the old part of the city.

Step2: 基本短语搭配

14. I've accepted the job over the phone, but I haven't________ in writing yet.

13. The students________ the task in less than ten minutes.

12. We hope to become more _______in predicting earthquakes.

11. It's a book about the________ of the universe.

10. ________of this new treatment cannot take place until all the data has been collected.