2007年1~4月,贵阳房地产开发投资增幅比2007年1~8月增幅高()。
A.约8.9%
B.约8.9个百分点
C.约23%
D.约13个百分点
参考答案:D
—Did you see Tom at the party?
—No, he_________by the time I got there.[ ]
A. left
B. was leaving
C. had left
D. has left
外防水层基面验收?