题目内容：
During McDonald's early years French fries were made from scratch every day. Russet Burbank potatoes were (31) __________, cut into shoestrings, and fried in its kitchens (32) ___________ the chain expanded nationwide in the mid-1960s it sought to (33)___________labour costs, reduce the numberof suppliers, and(34)__________ that its fries tasted the same at every restaurant. McDonald's began (35) __________ to frozen French fries in 1966--and few customers noticed the difference. (36) ___________, the change had a profound effect (37)___________ the nation's agriculture and diet A familiar food had been transformed into a highly processed industrial (38)__________. McDonald's fries now come from huge manufacturing plants (39) __________ can process two million pounds of potatoes a day. The expansion (40) __________ McDonald's and the popularity of its low-cost, mass-produced fries changed the way Americans eat.The (41) ___________ of McDonald's French fries played a (42) __________ role in the chain's success—fries are much more profitable than hamburgers—and was (43)__________ praised by customers, competitors, and even food critics. Their (44) __________ taste does not stem (45) ___________ the kind of potatoes that McDonaid's(46)__________, the technologythatprocessesthem,ortherestaurant equipment that fries them: other chains use Russet Burbank, buy their French fries from the (47) largeprocessingcompanies,andhavesimilar (48)__________ in their restaurant kitchens. The taste of a French fry is (49)__________ determined by the cooking oil For decades McDonald's cooked its French fries in a mixture of about 7 per cent cottonseed oil and 93 per cent beef fat. The mixture gave the fries their unique (50)_________填上最佳答案。 A．scaled
B．stripped
C．peeled
D．sliced
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