题干

著名高分子化学家、北大校长周其风写了一首歌,歌名为《化学是我,化学是你》.其中写道:“…你我你我 要温暖漂亮 化学提供 衣装婀娜;你我你我 要吃足喝好 化学提供 营养多多;你我你我 要飞天探地 化学提供 动力几何;即使你我的身心健康 也是化学密码解锁;…”写出了化学对社会进步和人类文明的贡献.关于化学对社会进步和人类文明的贡献,下列说法不正确的是(  )

A:合成药物的研发和使用,保障了人体健康  

B:新材料的研制和应用,提高了人们的生活品质  

C:化石燃料的直接利用,促进了低碳经济的发展  

D:化肥的合理使用提高了农作物产量,缓解了人类粮食危机

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答案(点此获取答案解析)

C

同类题3

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

    It was a bad time for me. I was low emotionally and tired physically. Probably because of this I hadn't shaved for a few days. Also, because I had been doing some repairs at my daughter's house, I was dressed quite scruffily(不整洁地). Boarding the bus to go home I saw it was almost full so I found a rail(扶手) to lean against.

    That's when a young woman, sitting with her child, stood up and offered me her seat. ‘Wow!' I thought. Out loud I said, “Do I look that old and tired?” She replied, “You look like you've had a tough day.” I thanked her sincerely and stayed standing.

    A moment later a man rose from his seat at the back of the bus and made his way towards me, walking past several people on the way. Then he told me about his addiction(毒瘾) problems, asked my advice, and just chatted about life for a few minutes. Then he went back to his seat. Very random!

    Watching him go, I also looked at the bus-load of people between me and his seat. He hadn't chosen to talk to those strangers. He chose to talk to this stranger, for whatever it meant to him and whatever comfort it brought him. Why?

    That's when it occurred to me. I must have looked like I had been where he was. I probably looked like a man who would understand a difficult life. I was humbled(谦卑的) and encouraged at the same time by the realization that even when we are at our lowest we can still help others — if we look like we might be able to meet them where they live or walk a while in their world.