题干

如图所示,一长方体木块,置于同一粗糙水平面上,甲图木块竖放,乙图木块平放,丙图木块平放并在其上加一重物.在甲、乙、丙三种情况下,匀速拉动长方体所需的水平力分別为F甲、F乙、F丙.则下列关系正确的是(   )

A:F甲<F乙<F丙

B:F甲>F乙>F丙

C:F甲<F乙=F丙

D:F甲=F乙<F丙

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D

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    Courage is the ability to be brave in different situations in our life. Here and there, now and then, everyone needs courage to do something well. Courage may make you confident of your success. If you have courage, you will not show fear in face of anything difficult or dangerous. With courage, you may look at someone in the eye who you have wronged (冤枉) and say “I am sorry”, you may keep smiling even if you are seriously ill and know you are at the end of your life.

    How can we build up our courage?

·Believe you will be successful.

    Take chances and know that you have your own talents. Besides, your family and friends are always there for you.

·Exercise your courage.

    It can be compared to a muscle (肌肉). The more we use courage, the greater it gets.

·Know that giving up is not a choice.

    It's much easier to give up. But it takes courage to say or do what you think is right, even when other people think you are wrong.

·Read inspiring stories of brave people.

    Abraham Lincoln is one of the people who you may think of.

阅读以上信息,用恰当的词完成下面的短文,每空一词。

    Courage is the ability to be brave in different situations. It is important to everyone. With courage, you will feel confident of your success; with courage, you won't be____of anything difficult or dangerous; with courage, you may look at someone you have wronged in the eye and say sorry to him or her; with courage, you may keep smiling even if you are seriously ill.

    Here are some useful ____ to build up our courage.

    First, believe that you'll____. Take chances and know that you have your own talents.

    Second, exercise your courage. It's just like the muscle. The more we use courage, the ____ we will get.

    Third, don't____to give up although it's much easier to do so, and you need courage to say or do what you think is right, even when others think you are wrong.

    Finally, read inspiring stories of brave people. Abraham Lincoln is such a kind of person.