地貌
参考答案：
指地球硬表面由地貌内外动力相互作用塑造而形成的多种多样的外貌或形态。
中华人民共和国的首都是（ ）
A．天津
B．广州
C．上海
D．北京
President Obama and his team of administration promised to try every means possible to _____
3,500,000 jobs and _____ the goal of recovering its economy as soon as possible. [ ]
A. create; accomplish
B. invent; achieve
C. discover; win
D. attract; finish
