注射剂中加入硫代硫酸钠作为抗氧剂时，通入的气体应该是
A．O2
B．H2
C．CO2
D．空气
E．N2
参考答案：E
汉译英：“细菌；霍乱；纤维素”，正确的翻译为（）
A．bacterium；cellulose；cholera
B．cholera；bacterium；cellulose
C．bacterium；cholera；cellulose
D．cellulose；cholera；bacterium
—Oliver's never climbed the Great Wall, ________?
—Really? So we can go together next time. [ ]
A. has he
B. hasn't he
C. does he
D. doesn't he
