四六级考试

【单选题】 The author's purpose in writing this passage is ________.
A．to describe the difficulties in solving humanity's current problems
B．to present the different views on humanity's current problems
C．to analyze the contradiction between countries in dealing with humanity's current problems
D．to point out that humanity's current problems can only be solved through the cooperation of nations

网考网参考答案：D
网考网解析：
[解析] 主旨大意题。解答此类题要根据文章的主题句或结论句。本文没有主题句，却有结论句，即文章最后一句(But solutions to humanity's current problems will come only through coordinated international efforts to control human population，stabilize the composition of the atmosphere，and preserve intact Earth's complex web of life．)。很显然，D的表述与结论句一致。所以D是正确答案。 查看试题解析出处>>