题干

如图所示是做光电效应实验的装置简图.在抽成真空的玻璃管内,K为阴极(用金属铯制成,发生光电效应的逸出功为1.9eV),A为阳极.在a、b间不接任何电源,用频率为ν(高于铯的极限频率)的单色光照射阴极K,会发现电流表指针有偏转.这时,若在a、b间接入直流电源,a接正极,b接负极,并使a、b间电压从零开始逐渐增大,发现当电压表的示数增大到2.1V时,电流表的示数刚好减小到零.(普朗克恒量h=6.63×10﹣34J•s)求:

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The Winner's Guide to Success

    Do you know what makes people successful? To find out the answers, an American scholar recently visited some of the most successful people around the world. ____

    Be responsible for yourself       

    Sometimes you may want to blame others for your failure to get ahead. In fact, when you say someone or something outside of yourself is stopping you from making success, you're giving away your own power. ____

    Write a plan

    It is very difficult to try to get what you want without a good plan. It is just like trying to drive through strange roads to a city far away. ____ Without this “map”, you may waste your time, money and also your energy; while with the “map” you'll enjoy the “trip” and get what you want in the shortest possible time.

    Be willing to pay the price

    ____ So you must be ready to work hard — even harder than you have ever done. If you are not willing to pay the price, you won't get anything valuable.

    ____

    It seems to us that everyone knows this. But it is easier said than done.When you are doing something, you must tell yourself again and again: Giving up is worse than failure because failure can be the mother of success, but giving up means the death of hope.

A. Never give up.

B. Nothing is easy to get.

C. A good plan is like a map to you.

D. Here are some keys to success that they give.

E. Some people achieve success much later in life.

F. You're saying, “You have more control over my life than I do.”

G. Someone else's opinion of you doesn't have to become your reality.