IELTS Reading 1 - Passage 3 Questions 27-33

27 an example of a food which particularly benefits from the addition of spices. [blank_start]D[blank_end] 28 a range of methods for making food safer to eat. [blank_start]I[blank_end] 29 a comparison between countries with different climate types. [blank_start]F[blank_end] 30 an explanation of how people first learned to select appropriate spices. [blank_start]G[blank_end] 31 a method of enhancing the effectiveness of individual spices. [blank_start]D[blank_end] 32 the relative effectiveness of certain spices against harmful organisms. [blank_start]C[blank_end] 33 the possible origins of a dislike for unspiced foods. [blank_start]H[blank_end]