板层状鱼鳞病的基因定位于()
A.3q21-q22
B.2q33-q35
C.1q21
D.1q25-1q32
E.Xq22.3
参考答案:B
—______the socks, Jim. You shouldn’t throw them everywhere.
—OK, Mum.
A.Put down
B.Put off
C.Put out
D.Put away
试举例论述在网络经济学中的马太定律是如何对厂商竞争策略发挥作用的?