英国经济学家凯恩斯提出的国际贸易学说是
A.幼稚工业保护论
B.要素禀赋论
C.超保护贸易学说
D.重商主义学说
参考答案:C
There is an obvious _______ between children spending too much time playing computer games and their bad grades at school.
A.possibility
B.connection
C.chance
D.cause
建筑隔墙用保温条板贮存超过()个月,应翻换板面朝向和侧边位置。