继“神舟”系列载人航天工程之后，我国在航天领域里还将实施[ ]

A．太阳能开发

B．“嫦娥奔月”计划

C．探测火星工程

D．“黑洞”开发研究

The secretary has a lot of things to ______ in the office since she has been away for quite a few days.  

A．take up

B．make up

C．work out

D．carry out