2011年我国国家机关招录公务员报名考试再次火爆，竞争十分激烈。这表明在市场经济条件下劳动者应该

①树立竞争就业观

②改善劳动就业环境

③树立职业平等观

④树立多种方式就业观

A．①②③

B．②③④

C．①③④

D．①②③④

If a person has not had enough sleep, his actions will give him ___ during the day.

A．away

B．up

C．in

D．back