1. 根据句意及中文提示填写单词。

1. （1） Do you want to be a （先锋）or a genius?
   

3. （2） In （总的）, France is quite an expensive place to visit.

5. （3） China is beginning to test the air quality with the new （标准）of PM2.5.

7. （4） The （高速的）Hangzhou-Shanghai line started running a few years ago.

9. （5） I want to buy a book on English （语法）.