【简答题】We use plastic wrap to ___1___. We put our garbage in plastic bags or plastic cans. We sit on plastic chairs, ____2____ plastic toys, drink from plastic cups, and wash our hair with __3____ from plast...
【单选题】根据以下内容回答题:Cotton,like silk,was discovered and made cloth by man before the historical period(76).Its first recorded use was in India,where cotton cloth of very fine texture,almost(77)silk,was made.Whe...
【单选题】根据以下内容回答题:Cotton,like silk,was discovered and made cloth by man before the historical period(76).Its first recorded use was in India,where cotton cloth of very fine texture,almost(77)silk,was made.Whe...