新人教版九年级第六单元精选练习题附答案Unit 6When was it invented?第一课时 Section A(1a2d) .根据句意及首字母提示填写单词。1. The most popular online shopping w_ of China is .2. My brother joined the Young P_ last year.3. Please read all the names in the third l_ for me.4. It took us about two months to complete the p_ last year.5. Thank you for showing us around the radio station.Dont m_ it.用方框中所给单词的适当形式填空。 6. An _ iron is very useful in our dail