1.密封,不能有空气,要生成酒精
2.注意细菌感染
3.注意果子之间和果子与水的比例（甜或不甜的问题）
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- 1she always goes swimming （为什么swimming用ing形式）
- 2把三米长的绳子平均分成八份,每份是几米,每份是绳长的多少,五份是绳长的百分之几?
- 3这四个的区别enough hardly 与hardly enough enough hard hard enough
- 4适当词填空1、They look the same,but they are____ and do things______(different)
- 5tom and his classmates watered (20)young trees.对括号提问
- 6甲圆的半径是乙圆的4倍,甲圆的周长是乙圆的[ ]倍,甲圆的面积是乙圆的[ ]倍.
- 7some students even have no ideal of ^_they are studying ,so they waste much time playing
- 8The old man has____friends.So he often feels lonely.
- 9赞美雪的好词好句
- 10写出两句描写夏天的诗句