问题
选择题
China’s oil price _____ very sharp increase during the year 2010 and it is continuing to rise further in 2011.
A．observed
B．witnessed
C．proved
D．supplied
答案
答案：B
这题考查动词的observe观察witness目睹，见证prove证明supplied供应，句意是：2010中国见证了油价的急速上升，2011年还在持续上涨。选B。