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
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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
Which animal is called "the nation treasure" of Australia？
A. Kangaroo.
B. Koala.
C. Emu.
D. Lyrebird.
"There is no easy solution." in the last paragraph probably means that
A. the government doesn"t support Howard Davies"s decision.
B. it"s a tough decision facing both financial and environmental costs.
C. the public hold different opinions on where to build the airport.
Davies can"t identify the economic benefits brought by a new airport.
对于水难溶性药物或注射后要求延长药效作用的药物，可制成()注射剂
A. 注射用无菌粉末
B. 混悬
C. 溶液型
D. 乳剂型
E. 溶胶型
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