依次填入下列横线处的词语，最恰当的一项是（     ）

①不要用自己的无知去       别人的人生，更不要以为“不知者无罪”，不要以为自己可以一直这样漫不经心下去。

②然而人们灭亡于英雄的特别的悲剧者少，        于极平常的，或者简直近于没有事情的悲剧者却多。

③全心神        在家乡失陷的吴荪甫却并没留意到少奶奶的神情反常，他站起来踱了个步，用力挥着他的臂膊，然后又立定了。

④      外部环境仍然具有许多不确定性，国内综合成本不断上升，我国继续实施扩大内需和创新驱动的发展战略，这也是我国一个中长期的发展战略。

The students should _________ when the teachers give the lessons.

阅读理解，请阅读材料，完成后面的1-5题。

I remember when I was growing up ,my mom always said ,“Half the fun of doing anything is sharing it with others .” It's so true .Friends allow us to enjoy the taste of our success and our joys and comfort us in our challenging moments. They provide a mirror for us to learn more about ourselves .I've always looked at friends as the family members.They enrich our lives .As Robert Louis Steven once said,"A friend is a present which you give yourself."

To be a good friend，①成为一个好的听众是很重要的.Hear what your friend says first rather than making conclusions（结论）quickly. Sometimes it is useful to repeated their words back to them， it can help them to realize whether their words were what they wanted to say.

Patience is also important in being a good friend. You know the old golden rule, “Care for others they way you would like them to care for you.”The support of a friend during a difficult time could make the difference between success and failure. ② Encouragement and confidence are the best gifts that can change a person's life.

We should choose our friends carefully, because they can have a huge effect on our life. As someone told me“The attitudes of your friends are like the button(按钮) on a lift. They will either take you up or down.