A:分封制
B:宗法制
C:行省制
D:科举制
有关欧洲部分国家特色产业的说法错误的是 ( )
已知数列an的前n项和为Sn,且a1=-10,an+1=an+3n∈N*,则Sn取最小值时,n的值是( )
People have the belief ________ factories should produce fewer things from raw materials, ________ the supply is growing smaller and smaller.