Who is the author of The Rivals？
A. William Shakespeare.
B. R. B. Sheridan.
C. Henry Fielding.
D. John Galsworthy.
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In Britain, a session of parliament lasts for______unless the Prime Minister dissolves parliament.
A. 3 years
B. 4 years
C. 5 years
D. 6 years
In North America,______is considered as the largest fresh water lake in the world.
A. Lake Michigan
B. Lake Superior
C. Lake Huron
D. Lake Ontario
在注射剂处方中加入苯甲醇起()的作用
A. 抗氧剂
B. 止痛剂
C. 稳定剂
D. 抑菌剂
E. 螯合剂
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