巴斯德把新鲜、清澈的肉汤分别装入甲、乙两个玻璃瓶里，然后把甲瓶的瓶颈烧软，并拉成鹅颈似的弯曲细长的形状，把乙瓶的瓶口敞开。随后，他再次煮沸瓶内肉汤，然后静置观察。

观察发现，乙瓶内的肉汤很快就腐败变质了；而甲瓶中的肉汤尽管通过弯曲细长的瓶颈可与外界相通，在较长时间内肉汤仍然保持无细菌，不变质。通过实验，巴斯德认为，纯净的肉汤是永远不会自然生出细菌的，使肉汤腐败变质的细菌来自空气。

据此完成下列各题。

与人交往中，当我们和别人针锋相对时，别人也可能针尖对麦芒，这时，往往尴尬的是自己。这说明（    ）

下列有关气温的叙述，正确的是（　　）

    Facing the Enemies Within

    We are not born with courage, but neither are we born with fear. Fears, even the most basic ones, can totally ruin our ambitions (雄心壮志). Fear can ruin fortunes. Fear can ruin relationships. Fear, if left unchecked, can ruin our lives. Fear is one of the many enemies living inside us.

    ____.

    The first enemy we face is indecision. Indecision is the thief of opportunity____. Take a sword to this enemy.

    The second enemy inside is doubt.____ But you also can't let doubt take over. Many people doubt the past, doubt the future, doubt each other, doubt the government, doubt the possibilities and doubt the opportunities. Worse of all, they doubt themselves. I'm telling you, doubt will ruin your life and your chances of success. It will empty both your bank account and your heart.____

    Do battle with the enemy. Do battle with your fears.____. Be courageous in your life and in your pursuit of the things you want and the person you want to become.

A. Sure, there's room for healthy doubt. You can't believe everything.

B. Build your courage to fight what's holding you back, what's keeping you from your goals and dreams.

C. Let me tell you about two of the other enemies we face from within.

D. Below are the ways which might be useful for us to overcome our fears.

E. Doubt is an enemy. Go after it. Get rid of it.

F. It will steal your chances for a better future.

G. Some people doubt everything.