—________

    Isn't it amazing how you never have to water your weeds or nurture (培育) them and they still give you an unwanted crop?

    I can remember as a young boy my grandfather showed me how to1this annoying weed called Bermuda grass. It was2stuff and it would really3if you didn't get it out by the4

    When my wife and I bought our first home about 8 years ago, what I had to deal with this is this certain part weeds5to the Bermuda grass, which would also spread wildly.

    After getting the inside of our home6it was time to work on the outside. On my hands and knees I7— attacked the weeds with a small hand spade getting each one 8by the roots.

    Just this Spring I realized that one particular weed was no longer9 but another one was in full 10 So again, I got down on my hands and knees and got to work11them from my yard. When I was12 my yard was better off.

    Sometimes our life can be so similar. We all have weeds in our life. These weeds can be challenges, setbacks, or13beliefs, and the list can be14.

    When dealing with these weeds of15 the16is to get to the root of them and remove them one by one out and eventually you will17 this round. And when another crop of weeds18 deal with them directly 19they spread, because now that you know what to do with them by getting to the root of it, it will give you more courage and20the next time a problem arises up.

$\frac{1}{2}+\frac{1}{2}\text{=}\frac{1}{4}$

战争是政治集团之间、民族之间、国家之间矛盾的最高斗争表现形式，既对人类文明的发展和进步起着催化和促进作用，又时刻威胁着人类自身的生存。阅读材料，回答问题：

材料一：  如图所示

材料二：1917年美国加入协约国参战，威尔逊在战争咨文中说：美国参战不是为了征服领土，不是为了索取赔款，而是为了民主与自由，为了弱小民族的权利和自由，为了使世界本身最后获得自由。 ──（美）杜蒙德《现代美国》

材料三：战争对美国来讲是笔大生意，威尔逊领导美国参加的那场战争，战场上每名敌军倒下，美国就有25000美元入账。                

──（美）埃里克•方纳《给我自由》

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