SEOUL - Samsung Electronics, the world’s largest smartphone maker, said Thursday that it has sold more than 10 million units of Galaxy S4, in ______ a month since its debut (首次亮相).

A．less than

B．more than

C．other than

D．rather than

注入井可以笼统地理解为向地层注入（）的井。。

A、胶体

B、化学剂

C、溶液

D、驱替液