题干

下列因果关系的说法中,正确的是(  )

A:电磁波是空气的振动而引起的,故只能在空气中传播

B:电磁波在传播过程中总要“衰减”,故传播距离很小

C:长波能用于超远程通信,是因为其传播损耗小,绕射能力强

D:以上说法都不对

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C

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                                                                                             Make the right choices

    What is life's greatest gift?____Choice is the ability to select one course of action from a set of alternatives to achieve a goal. What is so great about choice? It transforms us from dumb animals into artists. Each of us becomes another Michelangelo. Choice becomes nothing other than the tool we use to sculpt (雕刻)our life. The tool doesn't come free, however, for the price of choice is responsibility.____The reward is happiness.

    Life is not still. It is a flow.____We constantly need to monitor where we are on our journey. We need to ask questions: Am I moving closer to my goals? If not, what corrective measures can I take? What action will I take now to readjust myself to my goals? Choice is power. Choice is at the heart of life. It is the creative power of life.

    ____And your life becomes more convenient or comfortable because of them. For example, you decide which stores to shop at and which gas station to go to. But the decisions that we make to sculpt our lives are far more important than deciding where to shop. The more we appreciate the difference between minor and major decisions, the greater the probability that we will experience happiness and fulfillment.

    All chess lovers realize that it isn't necessary to win to enjoy the game. The pleasure is in the playing. Life is like a chess game.____

A. It is free will or choice

B. You have to make choices every day

C. Make the best moves you can under the circumstances

D. But when we accept and carry it out, we get a great return

E. Every choice we make leads us closer to or farther from our goals

F. Life is full of hard choices, and the bigger they are, the harder they get

G. Choose to carry out responsibilities not because you have to, but because you want to