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【简答题】
读“世界人口年龄系数示意图”，分析回答下列各题。 （1）图中四条曲线中，已知A曲线是发达国家老年人口年龄系数，判断另三条曲线中，代表发达国家少年儿童人口系数的是________；代表发展中国家老年人口年龄系数的是________；代表发展中国家少年儿童人口系数的是________。 （2）从图中可以看出，在时间发展上世界老龄化程度有________的变化趋势；在空间分布上老龄化进程也存在着________差异。 （3）图中显示出大约在_______年，发达国家老年人口系数首次超过少年儿童人口系数；大约到_______年，世界上的老人将多于少年儿童。 （4）发展中国家在人口方面存在的主要问题：20世纪是____________，20世纪以后将面临__________、__________双重压力。
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参考答案：
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【简答题】听力原文： When my first wartime Christmas came, I was in basic training in New Jersey. At that time I was not sure if I would make it home for the holidays. Only on the afternoon of December 23 did I see ...
查看完整题目与答案
【单选题】I ______ English in that school since I came to the city. [     ]
A.
have taught
B.
am teaching
C.
will teach
D.
taught
查看完整题目与答案
【单选题】Ch oose the answer t ha t is closest in meaning to t he underlined word in the sentence . 1 . After the first visit , I came home laden with flats and pots and cardboard boxes .
A.
filled
B.
loaded
C.
charged
D.
left
查看完整题目与答案
【简答题】写出关系表达式: 1、表示小写字母 2、x是3的倍数 3、a等于c或b不等于0 4、x在区间(0,1]
查看完整题目与答案
【简答题】根据下表所示化学反应与数据关系： 请回答： (1)反应①是_____________（填“吸热”或“放热”）反应。 (2)写出反应③的平衡常数K 3 的表达式___________。 (3)根据反应①与②可推导出K 1 、K 2 与K 3 之间的关系，则K 3 = _________（用K 1 、K 2 表示）。 (4)要使反应③在一定条件下建立的平衡向逆反应方向移动，可采取的措施有_______...
查看完整题目与答案
【简答题】One day I was dining with my friend Zhou in McDonald when two young girls came in hand in hand. While enjoyed a hamburger, I found Zhou looking around at something strangely. I raised my eyes to see w...
查看完整题目与答案
【单选题】听力原文：M: I came across our friend Michael last week in the street. He said he hadn' t heard from you for ages. W: Yes, I know. But I' ve been too busy to telephone him. Why does the man want to work in...
A.
He wants to learn more foreign language.
B.
He is not satisfied with his old job.
C.
He wants to be an English teacher.
D.
He needs more training in English teaching.
查看完整题目与答案
【单选题】____ in thought, he didn’t notice me when I came into his room.
A.
Burying
B.
Buried
C.
Put himself
D.
To be set
查看完整题目与答案
【简答题】完形填空 I came to study in the US last fall. My life had been quite 1 since I arrived at Andover. Although I had quite a few extracurricular (课外的) activities, I hadn’t taken any official leadership posit...
查看完整题目与答案
【单选题】— John, how did your English exam go? — I thought I ____, but in fact I came in the top 10% in the class. [     ]
A.
should have failed
B.
couldn' t have failed
C.
might have failed
D.
mustn' t have failed
查看完整题目与答案
相关题目：
【简答题】听力原文： When my first wartime Christmas came, I was in basic training in New Jersey. At that time I was not sure if I would make it home for the holidays. Only on the afternoon of December 23 did I see ...
查看完整题目与答案
【单选题】I ______ English in that school since I came to the city. [     ]
A.
have taught
B.
am teaching
C.
will teach
D.
taught
查看完整题目与答案
【单选题】Ch oose the answer t ha t is closest in meaning to t he underlined word in the sentence . 1 . After the first visit , I came home laden with flats and pots and cardboard boxes .
A.
filled
B.
loaded
C.
charged
D.
left
查看完整题目与答案
【简答题】写出关系表达式: 1、表示小写字母 2、x是3的倍数 3、a等于c或b不等于0 4、x在区间(0,1]
查看完整题目与答案
【简答题】根据下表所示化学反应与数据关系： 请回答： (1)反应①是_____________（填“吸热”或“放热”）反应。 (2)写出反应③的平衡常数K 3 的表达式___________。 (3)根据反应①与②可推导出K 1 、K 2 与K 3 之间的关系，则K 3 = _________（用K 1 、K 2 表示）。 (4)要使反应③在一定条件下建立的平衡向逆反应方向移动，可采取的措施有_______...
查看完整题目与答案
【简答题】One day I was dining with my friend Zhou in McDonald when two young girls came in hand in hand. While enjoyed a hamburger, I found Zhou looking around at something strangely. I raised my eyes to see w...
查看完整题目与答案
【单选题】听力原文：M: I came across our friend Michael last week in the street. He said he hadn' t heard from you for ages. W: Yes, I know. But I' ve been too busy to telephone him. Why does the man want to work in...
A.
He wants to learn more foreign language.
B.
He is not satisfied with his old job.
C.
He wants to be an English teacher.
D.
He needs more training in English teaching.
查看完整题目与答案
【单选题】____ in thought, he didn’t notice me when I came into his room.
A.
Burying
B.
Buried
C.
Put himself
D.
To be set
查看完整题目与答案
【简答题】完形填空 I came to study in the US last fall. My life had been quite 1 since I arrived at Andover. Although I had quite a few extracurricular (课外的) activities, I hadn’t taken any official leadership posit...
查看完整题目与答案
【单选题】— John, how did your English exam go? — I thought I ____, but in fact I came in the top 10% in the class. [     ]
A.
should have failed
B.
couldn' t have failed
C.
might have failed
D.
mustn' t have failed
查看完整题目与答案
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