题干
The company had about 20 notebook computers but only one-third _______ used regularly. Now we have 60 working all day long.
A：is
B：are
C：was
D：were
答案(点此获取答案解析）
D
融危机对我国经济的影响，我国以积极的姿态参与中美战略与经济对话，不失时机地实施“走出去”战略，积极参与国际竞争和合作，以提高我国的综合国力。这体现了
