读下图，回答1—2题。
1、关于我国第一次到第六次人口普查结果的叙述正确的是[ ]
A．人口总数一直递增而且增幅越来越大
B．人口总数一直递增但增幅一次比一次小
C．第二次到第三人口普查期间人口总数迅速增加，65岁及以上人口比重迅速增加
D．增幅从第三次开始呈下降趋势
2、第六次全国人口普查的结果显示我国人口老龄化问题日益严重，下列措施可行的是[ ]
A．提高人口增长率
B．加快产业转型与升级
C．降低人口死亡率
D．控制人口性别比
1、D
2、B
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| People often fall ill because of me. 1 , they can hardly blame me; it is largely their own 2 . A tired person may get 3 , especially when he goes to crowded places with polluted air. A sudden change in 4 is another factor. In hot summer, people turn on the air-conditioner upon returning home. They will catch a cold easily. My latest victim is an energetic student. After school, he played football hard for two hours. Though 5 , he still went to the cinema. Then he got back home and took a cold shower immediately. I seized this golden chance to 6 him. He reacted, trying to 7 me, but I was already 8 deep in his throat. He kept sneezing (打喷嚏) and his nose was running. 9 he put on some warm clothes, it didn't work, for there were too many of us. Besides, his sore throat kept 10 him, and he developed a cough to force me and my family out, but 11 . The next day he couldn't go to 12 . He had lost his appetite and was not as 13 as before. His mother made him orange juice every few hours for more vitamin C, which would help his 14 . For two days he was 15 by his mother. As he rested more, his defense strengthened and I began to feel the 16 . I knew I had to 17 him before long. But I am not the one who gives up easily, and I made every effort to fight back. 18 , it was my turn to feel 19 now, for his defense system was starting an all-out attack against me. I became 20 and finally my time was over. Do you know what I am? | ||||
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