消化道溃疡的常见症状是：()
A．恶心
B．呕吐
C．腹胀
D．上腹痛
E．消化道出血
参考答案：D
The fact that she was foreign made__________difficult for her to get a job in that country.
A. so B. much D. that D. it
房地产开发一般可以划分为( )几个阶段。
A．审定项目规划设计
B．投资机会选择与决策分析
C．房地产开发前期工作
D．房地产开发建设
E．房地产租售经营
