predator, it may even push species A to local extinction.РРРBusiness ecosystems face problem of deciding who is a friend and who is an enemy. And the bad news doesn’t stop here. “When everything is connected directly or indirectly to everything else, changes in one part of the system may be propagated throughout,” says Pimm. (60) “Sometimes species may go extinct though no fault of their own.”РРРРРР【答案】1. 在复杂的企业网络中，企业之间有时合作有时竞争，更重要的挑战是创造机会并适应变化。Р2. 随着资源和市场的开发，传统的收益递减理论被经济学家亚瑟提出的收益递增理论取代。Р3. 如果商业系统和生态系统有一些基本的共同点，那么老板们就会担忧。Р4. 但物种A总是遭殃，因为捕食者有另一个猎物物种B，而物种B与物种A竞争。Р5. 有时，尽管不是自身的错，物种也可能会灭绝。РРРРР15. 单选题РSome women ______ a good salary in a job instead of staying home, but they decided not to work for the sake of the family.РРР问题1选项РРA.must makeРРB.should have madeРРC.would makeРРD.could have made
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