题干

我国谚语中的“螳螂捕蝉,黄雀在后”体现了食物链的原理.若鹰迁入了蝉,螳螂和黄雀所在的树林中,捕食黄雀并在栖息于林中,下列叙述正确的是(    )

A:鹰的迁入增加了该树林中蝉及其天敌的数量

B:该生态系统中细菌产生的能量可流向生产者

C:鹰的迁入增加了该生态系统能量消耗的环节

D:鹰的迁入改变了该生态系统能量流动的方向

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C

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    As I grow up, I gradually know that life plays a very important role in my education I really wanted to achieve. What I mean is that life can teach you things no one else can. Luckily for you, it's time to have lessons of life. Pay attention and you can know what I call the school of life.
    Use Your Head
    You have to be smart to survive (生存) in this world. Anytime you need to make a move, stop and think. Obviously there will be times when you need to take action first, but if you've been taking the time to plan, you'll always make the right choice. Fail to plan, plan to fail.
    Set Your Goals
    In my team, if you don't finish the job well, we will fire you. Your goals should be on building a basic of solid and complete work. Make certain a list of what you have to do and start with the biggest and most difficult task. The key here is goals.
    Respect Your Superiors (上级)
    Your boss is in his position for a reason, no matter what you think of him. If he's not the best one, be patient—he'll be out of there soon. In the meantime, you have to respect him as your superior. That means following orders and closing your mouth. If you don't respect your boss, how will you expect the people under you to do the same?
    Keep Your Cool
    You should never let your emotions (情绪) control you. You should learn to keep calm. Never lose your cool when dealing in business, or it will ruin the whole thing.
    The school of life can be hard, but if you're smart and play your cards right, you can come out with an A+. Just treat every situation as a learning experience. I hope you've studied.