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　　1．题目：With which of the following statements would the author probably agree?
　　答案：C）Two-parent families produce less attractive children.
　　2．题目：According to the passage, in what way does family conflict affect the quality of the offspring?
　　答案：A）The young males get less care.
　　3．题目：What is the relationship between paragraph 4 and paragraph 5?
　　答案：B）Experiment and result.
　　4．题目：According to Hartley, which of the following is NOT influenced by sexual conflict?
　　答案：D）The offspring's body size.
　　5．题目：According to the passage, people believe that a female's reproductive strategy is influenced by
　　答案：C）ecological factors.

　　速记口诀：
　　单亲家庭的孩子表现最佳
　　1．双亲孩子吸引少____________________
　　2．冲突使得照顾少____________________
　　3．实验结果是关系____________________
　　4．身材大小免影响____________________
　　5．生态影响到繁殖____________________ [综合类C]