欧盟对中国实行歧视性政策主要表现在( )
A．“反倾销”的运用
B．关税壁垒
C．技术性壁垒
D．反补贴
参考答案：A
The price of the houses in this district_________from 5% to 7% in the past two months.
A．has fallen
B．has been fallen
C．was fallen
D．was falling
临床常用的雾化吸入法有几种？
