35. According to the passage, it is no easy job to carry out a general plan for birth control throughout the world because _____.
(A) there are too many underdeveloped countries in the world
(B) underdeveloped countries have low level of industrial development
(C) different governments have different views about the problem
(D) even developed countries may have complex problems

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統計： A(1), B(9), C(229), D(78), E(0) #1821815

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One of the difficulties in carrying out a world-wide birth control program lies in the fact that official attitudes to population growth vary from country to country depending on the level of industrial development and the availability of food and raw materials. 

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在全球范圍內進行控制人口計劃的一個困難...
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