外部过电压，与气象条件有关，又称为（）。
A、气象过电压
B、大气过电压
C、污秽过电压
D、条件过电压
参考答案：B
The price of oil is __________higher and higher, which doesn’t prevent people from owning a new car in many developed cities in China.
A．rising
B．raising
C．arising
D．arousing
—_______ is "Lucky 52" shown on CCTV-2?
—Every week. [ ]
A. How often
B. How long
C. How soon
D. How many times
