[单选题]Choose one answer that best explains the underlined part of the following statements or best completes them.In April, the EC imposed a ban on livestock, meat and dairy products from 18 eastern countries following an outbreak of hoof and mouth disease in Croatia.（ ）
A
levied a high tariff
B
shut out imports
C
adopted quota systems
D
limited the import volume
正确答案：B
题目解析
本题考查划线词的近义词辨析。
levied a high tariff：征收高额关税；shut out imports：关闭进口；adopted quota systems：采取配额制度；limited the import volume：限制进口数量。
句意：今年4月，在克罗地亚爆发口蹄疫之后，欧盟对来自18个东欧国家的牲畜、肉类和奶制品实施了禁令。所以B选项shut out imports符合句意。
