人口年龄系数指不同年龄段人口在总人口中的比重。读“不同类型国家人口年龄系数曲线图

题型:选择题

问题:

人口年龄系数指不同年龄段人口在总人口中的比重。读“不同类型国家人口年龄系数曲线图”,回答1~2题。 

1.图中四条曲线表示内容正确的是[ ]

A.曲线A为发达国家老年人口年龄系数

B.曲线B为发达国家少年儿童人口系数

C.曲线C为发展中国家老年人口年龄系数

D.曲线D为发展中国家少年儿童人口系数

2.发达国家和发展中国家老年人口系数超过少年儿童人口系数的时间依次是[ ]

A.1998年和2050年

B.2020年和2050年

C.1998年和2020年

D.2030年和2050年

考点:人口增长模式及转变
题型:选择题

阅读理解。

    This morning, a boy of twelve saw a small fire at one end of a ship. Tom left home very

early, against the wishes of his father, to see the ships at the port. It was a good thing that

he did, because there was nobody else around, and the small fire grew dangerously big very

soon.

    Tom stood near the ship and shouted at the top of his voice. He woke up the port workers

living nearby. The ship was one of the six big ships in port at the time and they were all carrying

oil (石油) and paper. The fire burned hundreds of boxes of paper, so it spread very quickly.

The end of the ship was black with smoke, but thanks to Tom, the fire didn't reach the oil.

    Tom was also lucky, because his father was pleased rather than angry with him.

1. When Tom saw the fire, he was _____. [ ]

A. at home

B. at the port

C. on the ship

D. on another ship

2. It was a small fire _____. [ ]

A. but it grew big very quickly

B. and luckily it stayed small

C. but it grew big very slowly

D. and it was not dangerous

3. As soon as the boy saw the fire, _____. [ ]

A. he knocked on the doors of nearby houses

B. he ran back home to tell his father

C. he shouted to wake up the workers nearby

D. didn't do anything at all

4. The ship was carrying _____. [ ]

A. paper and wood

B. oil and paper

C. wood but not oil

D. oil but not paper

5. The fire _____. [ ]

A. burned boxes of paper at first

B. burned oil at last

C. burned the boy

D. burned the whole ship

6. In this story the underlined word "against" means _____ in Chinese. [ ]

A. 顺从

B. 按照

C. 违背

D. 防备

题型:选择题

关于转氨酶的描述正确的是

A.肝细胞膜通透性升高时,ALT不升高

B.正常血清中ALT与AST含量很高

C.ALT的半衰期为17h,AST的半衰期为47h

D.AST测定肝细胞损害的灵敏度高于ALT

E.ALT与AST均为细胞内酶

题型:选择题

_______ that we can't get the necessary equipment, we will have to give up the

experiment.

A.To assume

B.Assume

C.Assumed

D.Assuming

题型:选择题

要进一步推进科技兴国战略和人才强国战略的实施,这必须             (   )

A.加强科技创新和教育创新

B.把发展教育作为国家一切工作的中心

C.加强党的正确领导

D.把集中力量发展科技摆在首要地位

题型:选择题

监管对象的列管范围是()

A、被暂予监外执行的罪犯

B、被裁定假释的罪犯

C、被依法剥夺政治权利的罪犯

D、被依法判处管制的罪犯

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