题目内容
【题目】读江苏和宁夏两省区水资源利用情况对照表,联系所学知识,回答下列小题。
省(自治区) | 人口总数(万) | 人均 用水量 (m3/人年) | 人均生活 用水量 (m3/人年) | 人均生产 用水量 (m3/人 年) | 农田灌溉亩 均用水量 (m3/亩年) | 万元GDP 用水量 (m3/万元) |
江苏 | 9566 | 610 | 70 | 540 | 446 | 570 |
宁夏 | 630 | 1780 | 20 | 1750 | 1352 | 4000 |
【1】表中数据表明
A.宁夏用水总量超过江苏
B.江苏生活用水占总用水量的比重约为宁夏的10倍多
C.宁夏万元GDP用水量是江苏的8倍
D.两省区生活用水比重均大于生产用水比重
【2】宁夏人均用水超过江苏的主要原因是
A.宁夏临黄河,水源充足
B.宁夏气候干旱,蒸发旺盛,工农业发达,生产用水量大
C.宁夏人口密度小,人均水资源占有量大
D.两省区产业结构不同
【答案】
【1】B
【2】D
【解析】
试题分析:
【1】用水总量=总人数*人均用水量,江苏总人数多,用水总量大;生活用水总总用量的比重=人均生活用水量/人均用水量,算出江苏生活用水占总用水量的比重约为宁夏的10倍多,B正确;宁夏万元GDP用水量不到江苏的8倍;生产用水比重=人均生产用水量/人均用水量,两省区生活用水比重均小于生产用水比重。
【2】宁夏人均用水超过江苏的主要原因是两省区产业结构不同,D正确。
【题目】近年来,甲国人口大规模迁往乙国。读下表,完成下列各题。
2012年甲、乙两国人口数据
国家 | 人口密度(人/平方千米) | 人口出生率(‰) | 人口死亡率(‰) |
甲 | 101 | 17.58 | 5.61 |
乙 | 228 | 8.33 | 11.04 |
【1】甲国、乙国最可能分别位于
A. 欧洲、非洲 B. 大洋洲、亚洲 C. 亚洲、欧洲 D. 非洲、拉丁美洲
【2】影响甲国人口大规模外迁的主要因素是
A. 经济因素 B. 生态因素 C. 文化因素 D. 历史因素
【3】大量移民有助于乙国
A. 加大环境承载力 B. 提高人口合理容量
C. 减缓人口老龄化 D. 缩小地区经济差异
【题目】Cloze 1(2017·新课标I卷)
体裁 | 文章话题 | 词数 | 建议时间 | 难度 | 自测正确率 |
说明文 | 人们对于食物中的脂肪和盐分的态度 | 221 | 10分钟 | ★★★☆☆ |
There has been a recent trend in the food service industry toward lower fat content and less salt. This trend, which was started by the medical community(医学界) 1 a method of fighting heart disease, has had some unintended side 2 (effect) such as overweight and heart disease — the very thing the medical community was trying to fight.
Fat and salt are very important parts of a diet. They are required .3 (process) the food that we eat, to recover from injury and for several other bodily functions. When fat and salt 4 (remove) from food, the food tastes as if is missing something. As 5 result, people will eat more food to try to make up for that something missing. Even 6 (bad), the amount of fast food that people eat goes up. Fast food ___7___ (be) full of fat and salt; by 8 (eat) more fast food people will get more salt and fat than they need in their diet.
Having enough fat and salt in your meals will reduce the urge to snack(吃点心) between meals and will improve the taste of your food. However, be 9 (care) not to go to extremes. Like anything, it is possible to have too much of both, 10 is not good for the health.