在基金营销组合的四大要素中,( )的主要任务是使投资者在需要的时间和地点以便捷的方式购买基金产品,提供持续服务。
A.产品B.费率C.渠道D.促销
参考答案:C
The teacher together with the students________discussing Reading Skills that________newly published in America. [ ]
A. are; were
B. is; were
C. are; was
D. is; was
下列变化属于分解反应的是( )
A.从空气中分离出氮气
B.实验室制取氧气
C.硫在氧气中燃烧
D.蒸发将液氧变成氧气