问答题 佝偻病的营养治疗原则?

未知题型 The causal relation encoded in the paragraph in Task 2.2 (Page. 51) is not a cause and effect in the conventional sense, but more of a logical deduction. Read the paragraph. Decide whether the following statements are true or false. 3. This paragraph starts with cause, followed by the elaboration of effects.

未知题型 餐饮、餐饮外卖不要需门店资质（）