36. What is Esky from the context?
　　A) a kind of food.
　　B) a case to preserve cold drinks or food.
　　C) electronic sky.
　　D) a refrigerator.
　　37. How did people move the already prepared food if they didn’t have freeze pack?
　　A) They put them in plastic bags.
　　B) They use ice to keep the temperature down.
　　C) They cover them with thick cloth.
　　D) They do nothing.
　　38. What are the features of this Portable Mini Fridge?
　　A) It is easily cleaned.
　　B) It works with a 12V DC supply.
　　C) It is environmentally friendly.
　　D) All the above.
　　39. In what way is Portable Mini Fridge superior to an Esky?
　　A) It’ 11 warm to 60-65℃ and it is environmentally friendly.
　　B) It carries more food and drinks.
　　C) It is larger.
　　D) It looks more beautiful.
　　40. What is the author’s attitude toward this mini fridge?
　　A) He thinks it’s inferior to Esky.
　　B) He likes it very much.
　　C) He thinks it’s like sliced bread.
　　D) He doesn’t quite like this fridge.