德国工业布局的变化主要表现在()
A. 高新技术产业趋于平衡
B. 轻工业由分散趋于集中
C. 新兴工业主要集中于南部地区
D. “煤铁复合型”产业东移
I suppose they have known about it, _______?
A. am I
B. am not I
C. have they
D. havent they
既是青藏地区的主要农业区,附近又有丰富的水能和地热资源分布的是()
A. 湟水谷地
B. 雅鲁藏布江谷地
C. 横断山区
D. 宁夏平原
The lady treats the boy well as if he ______ her own son.
A. is
B. was
C. were
D. would be