电视剧《康熙王朝》的主题曲《向天再借五百年》采用的演唱形式是（）
A.女声独唱
B.混声合唱C.男声独唱
D.齐唱、轮唱
参考答案：C
At the end of 2003, there were around 3,000 foreign printing companies in China,____up
around 2 percent of national total.
A．made
B．to make
C．making
D．having made
血糖浓度低于多少为低血糖症（）
A.3.8mmol/L
B.4.0mmol/L
C.5.0mmol/L
D.2.0mmol/L
E.2.8mmol/L
