Many of these problems are too complex for one country to solve alone. Outside help is needed, but it has to be the right kind of help. Money is not enough. Newly developed countries need to be helped to be able to help themselves.
According to the article, what is the tragedy?
A.There are more wealthy countries in the world.
B.There are more poor countries in the world.
C.There are more wealthy people in the wealthy countries.
D.There are more poor people in the poor countries.
第1题
红霉素经碱水解后紫外法测定
几种抗生素的种类和检验A、大环内酯类
B、氨基糖苷类
C、四环素
D、紫外236nm测定含量
E、麦芽酚反应
第2题
链霉素,卡那霉素,庆大霉素
几种抗生素的种类和检验A、大环内酯类
B、氨基糖苷类
C、四环素
D、紫外236nm测定含量
E、麦芽酚反应
第3题
链霉素特有的反应
几种抗生素的种类和检验A、大环内酯类
B、氨基糖苷类
C、四环素
D、紫外236nm测定含量
E、麦芽酚反应
第4题
金霉素,多西环素
几种抗生素的种类和检验A、大环内酯类
B、氨基糖苷类
C、四环素
D、紫外236nm测定含量
E、麦芽酚反应
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