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【单选题】
国家药品标准中原料药的含量(％)如未规定上限时，系指不超过A.
98.0％
B.
99.0％
C.
100.0％
D.
101.00％
E.
102.00％
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反馈参考答案：
举一反三
【单选题】4 Questions 3 to 4 are based on the news you have just heard.
A.
Because it will help preserve endangered elephants.
B.
Because it can save over 20,000 elephants a year.
C.
Because the elephant population in Asia has declined.
D.
Because there are only half a million elephants in Africa.
【单选题】4 Questions 3 to 4 are based on the following conversation
A.
Economic and political factors.
B.
Social and cultural factors
C.
Geographical and climate factors.
D.
Human and natural factors.
【单选题】4 Questions 3 to 4 will be based on the following news item.
A.
12%.
B.
23%.
C.
8%.
D.
50%.
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