下图是中国近代不同时段机器设备进口年平均值的变化情况。导致此变化的主要原因是（  ）

根据汉语提示完成句子
⑴____ （汉堡包） are not good for us.
⑵Heroes like eating mangoes, potatoes and ____  (西红柿) with knives.
⑶She likes dancing very much and she____  (需要) a lot of energy to dance.
⑷He always gets a lot of ____   (礼物) at Spring Festival.
⑸All careful persons ____  (从不) carry noodles in this way.
⑹Did they have a party to celebrate Halloween on____  (十月) 31^st?
⑺Her lifestyle is not____ （健康）.
⑻Millie knows Simon likes____  （收集）stamps.
⑼Oh, they don't fit well. Can I see ____ （另外的） pair?
⑽Most of the children in poor____ （地区） never listen to CDs.