题目内容：
第50题__________
A．But he never considered staying on his father and grandfather's land. B．While most people buy food from the big supermarkets, hundreds of independent Farmers' Markets are becoming popular.
C．While confidently they will succeed, she lists farming's many challenges.
D．Young people prefer to live in cities.
E．I seriously objected to the super-sizing of everything--what exactly do they put on our apples to make them so big and red?
F．"Buy British" campaigns urge ( 鼓励 ) consumers not to buy cheaper imported foods.
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