场外市场与场内交易所市场相比,具有的特点是()。
A.交易的合约是标准化的
B.主要交易品种为期货和期权
C.多为分散市场并以行业自律为主
D.交易以集中撮合竞价为主
参考答案:C
------Nice to meet you, Mike. ____________?
------Everything is OK. Thanks.
A.How is it going
B.What are you doing
C.How are you going
D.How are you
一个男子把X染色体上的某一突变基因传给女儿的概率是( )
A.0
B.25%
C.50%
D.100%