In August 1977, a satellite to gather data about the 10 million black holes which are thought to be in the Milky Way.
A、launchedB
暫無解析
A task of the post office staff is to_ (class) mail according to the places it is to go
Experts have found that normal sleep can be divided into five______stages
In my opinion, they should do something to reward their most_ (produce) employees
I'd appreciate it very much if you could make some ________on my recent article at the conference.
Herfatherleftherallhismoneywhenhedied,whichmadeherfinancially_(dependent)
