我国使用的铁锅是有益于人类健康的理想炊具，其主要原因是

A．能补充铁元素

B．不易生锈

C．资源丰富

D．价格便宜

We've just moved into a bigger house and there's a lot to do. Let's _____ it. [ ]

A. keep up with

B. do away with

C. get down to

D. look forward to 30.