平均年龄中位数是指用人口平均年龄除以2的得数。它一定程度上可以反映出人口的出生率、死亡率及其年龄结构特征。下表示意2010年部分国家及世界人口平均年龄中位数（单位：岁）。读后，据所学知识作答1—2题。
1、从表中可分析得到的正确结论是[ ]
A．中国人口平均年龄为35.2岁，属年轻型人口
B．表中各国，日本是人口最老的国家
C．日本的老龄人口数量（≥65岁）比中国的多
D．日本的人口自然增长率比中国的高
2、中国已经进入现代型人口增长阶段，但当前乃至今后较长时期内劳动力就业形势非常严峻。这是因为[ ]
A．平均年龄中位数较小
B．改革开放以来，大量承接产业转移
C．人口性别构成不合理，女性人口远多于男性人口
D．引进外资，带来外籍劳动力的大量涌入
要到微信小程序或APP查看答案哦。
实在点不开答案，可以分享到微信，
在微信里面查看答案。
APP具体操作流程为：
在国家预算中，单式预算是指（）。
A.国家财政收支计划通过一个统一的计划表来反映
B.国家财政收支计划通过两个以上表格来反映
C.能够明确地反映收支的结构性
D.能够反映经济建设工程效益的具体情况
第三部分阅读（共两节，满分40分）
第一节阅读理解（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C和D项中，选出最佳答案。
We’ve talked about snails (蜗牛) and their slow move. But much of the time snails don’t move at all. They are in their shells (壳) —sleeping.
Hot sun will dry out a snail’s body. So at the least sign of hot sun, a snail draws its body into his shell. A snail will die in a heavy rain. So when it rains, a snail does the same thing, too. A snail can sleep for as long as it needs to. It spends all the winter months in its shell, asleep.
In the spring the snail wakes up. Its body, about three inches long, comes out from the shell. When hungry, the snail looks for food. Its eyes, at the end of the top feelers (触角), are very weak. But its sense (感觉) of smell is very strong. It helps the snail to find food and the new greens.
A snail’s mouth is no bigger than the point of a pin (大头针). Yet it has 256,000 teeth! The teeth are very small, and you can’t see them. If you put a snail in a hard paper box, it will eat its way out! And if a snail wears out its teeth, it will grow new ones.
51. A snail _________.
A. moves more slowly at night B. has thousands of feet
C. doesn’t move at all D. sleeps much of the time
52. In the sentence “A snail draws i
A. to make with a pencil B. to push C. to pul D. to move away
53. From the story, we know _________.
A. a snail’s shell is very thin B. a snail can’t see well
C. a snail’s nose is quite short D. a snail’s body changes
54. A snail goes to sleep when _____.
A. it feels hungry B. it is put into a paper box C. spring is coming D. it rains heavily
55. Which of the following is wrong?
A. In winter the snail doesn’t eat or move.
B. A snail doesn’t like living under the sun.
C. The snail’s teeth can’t be worn out.
D. The snail’s nose helps to find food.
可以调节各器官血液分配量的血管是（）
A.大动脉
B.中动脉
C.小动脉
D.中静脉
E.大静脉
何谓冷一次风系统？
在数据库镜像的两种模式中，两台主机均为工作机，并为信息系统提供支持的是______。一台主机为工作机，另一台为备份机的是______。