Tham khảo tài liệu 'delta's key to the next generation toefl test part 62', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Answer Key 13-14. B C F. Key information Before artificial refrigeration was invented people stored perishable food with ice or snow to lengthen its storage time A refrigerator uses the evaporation of a volatile liquid or refrigerant to absorb heat. .the refrigerant is compressed pumped through a pipe and allowed to vaporize In air-cooling apparatus to treat yellow-fever compression refrigeration to the brewing and meatpacking industries. Answers A D and F are minor ideas. 15. B Clues Canadian English became a separate variety of North American English. when thousands of north to Canada. Many Loyalists settled in southern Ontario in the 1780s. 16. A Norms means patterns in this context. Clues .their speech became the basis. .a definition based on the-----of urban middle-class speech. 17. C A great deal in common with means many similarities to in this context. Clues .the ways in which it resembles. 18. B Clues Modern Canadian English is usually defined by the ways in which it resembles and differs from American or British English .many Americans identify a Canadian accent as British .many British people identify a Canadian accent as American. 19. B The referent of the two varieties is two things that have many similarities. The previous sentence discusses Canadian and American English. Logic tells you that the two varieties refers to Canadian English and American English. 20. D Spot means find in this context. Clues .instantly recognizable. .one Canadian in a crowded room will easily----the other Canadian among the North Americans. 21. C Canadian pronunciation reflects the experience of a people struggling is paraphrased in this effort is shown in their pronunciation. Struggling for national identify against two strong influences is paraphrased in have tried to distinguish themselves as a nation. 22. A Kerosene did not originate in a North American Indian language. All the other answers did .