综合写作:

　　yellow-legged mountain frogs 数量减少的原因

　　阅读中说

　　1引进一种鱼导致

　　2杀虫剂

　　3fungus

　　听力中说

　　1 鱼的引进是100年前的事，但蛙是这40年才减少的

　　2杀虫剂顺着水就流到山谷去了，但山顶的蛙数量同样减少了

　　3蛙皮肤能分泌一种化学成分帮助抵抗这种fungus

　　独立写作：

　　People should state their honest opinions even though they know others will disagree with their views.

　　In order to build trust with friends, coworkers and business partners, and to achieve better results in various projects, some people believe they tell their real thoughts even though others may hold contrary opinions. I agree with such a practice for I believe honest communication is the key for a happy and successful life.

　　First of all, we need to tell our friends and family members how we really feel and what we really want, so as to avoid misunderstandings and conflicts. If we tell lies to protect other's feelings, we may end up with upsetting ourselves and in turn damaging our relationships with friends and family members.  Once my parents wanted to throw me a birthday party, inviting some of my best friends at school. They liked the idea of having a picnic by a local lake. I said I'd be fine with a picnic party though I didn't really like it. I always hated being exposed in the sun light for too long and various bugs in woods. That birthday party turned out to be a disaster, because I was grumpy the whole time and was rude to everyone. No one really enjoyed the party all because of my hiding of my real thoughts. This incident taught me that I should be honest with my friends and family.

　　Further more, we need to talk frankly with our coworkers and business partners as well, so as to increase our work efficiency, explore full business potential and minimize the chance to make mistakes. Different opinions should be allowed in business meetings and we should speak out loud our opinions regardless others' doubts and oppositions. Steve Jobs was known as bold and blunt. When everyone doubted his idea of emphasizing iPhone's feature on various games, he insisted his idea and convinced those who didn't believe in him. And his idea turned out to be a great success. If Steve Jobs hadn't been completely honest with his colleagues, we wouldn't have witnessed such revolution the Apple Company has brought.

　　Though I'm still a student now and don't have colleagues at work, the same logic applies to group study as well. When doing group discussions and presentations, we should hold back any of our thoughts. Only when every member of the group is contributing his or her ideas to the collective project, can the team reach its full potential. Discussions and arguments are not a bad thing, because we can always find the best solution and be reconciled with friends.

　　All in all, I believe we should tell our opinions regardless others' doubts and oppositions.

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