2022英语周报中考版41期答案

37.(15分)(1)化学性质稳定、难溶于水、易溶于有机溶剂(3分)萜类化合物及其衍生物(2分)(2)油水混合物(2分)促进油和水的分离(2分)无水Na2SO4(2分3)适当延长蒸馏时间(2分)(4)水中蒸馏会导致原料焦糊和有效成分水解等问题(2分)

第一节Dear Mr GeorgeI am Li Hua, a volunteer of the activity"Englishi Communication to the Mountains". Now, I'm writing toexpress my sincere apology to you for not being present atthe activity to be held next Monday.The reason for my absence is that I suddenly fell illMy parents sent me to hospital, and I have to stay therefor a week. As for my volunteer work, I have asked myclassmate Tom to do it.Sincerely hoping that you can accept my apologiesYours.Li Hua

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