依次填入下面一段文字横线处的语句，衔接最恰当的一组是（    ）
狗是忠义、勇敢而又聪明的动物。________，________。________，________。________，________，使狗成为人的得力助手。
①专门训练军犬、警犬，把狗用于军事、案件侦破等方面
②它的嗅觉细胞数量是人的24倍，可以分辨大约两万种不同的气味
③比如牧民的狗，为了保护羊群，敢于同恶狼猛斗
④人们充分利用狗的这种特殊的天赋
⑤狗可以听到10万赫兹以上的声音
⑥代替主人做一些危险的事

日本学者福泽谕吉《文明论概略》一书中就社会转型的问题说：“汲取欧洲文明，必须先其难者而后其易者，首先变革人心，然后改变政令，最后达到有形的物质。”如此推理，中国近代化进程应该走的道路是（    ）

近年来，尿素电氧化法处理富含尿素的工业废水和生活污水得到了广泛关注，该法具有操作简易、处理量大、运行周期长等优点，且该过程在碱性条件下产生无毒的CO₂、N₂.电池工作时，下列说法错误的是（    ）

由两个比组成的式子叫做比例．（判断对错）

阅读下面短文，从短文后各题所给四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

    Last week our school held a sports meeting. Everyone in our class felt very 1 because we 2 many matches. In the boys' relay race, Michael3 very fast and our class won the first place. Alice did well 4 the long jump and she also won. We're sorry that we did 5 in the high jump than other classes, but we're sure we could do better next time. I took part in the boys' 6 race. I did my best and was the first 7 the finish line. This encouraged 8 a lot. Now I love sports better and I think nothing makes me9 than taking exercise everyday and I believe some day I 10 able to be the best soccer player and take part in the Olympic Games.