问题 填空题

(6分)化学与生活密切相关.

(1)下列生活用品中,其主要材料属于有机合成材料的是    (填字母序号)。

A.塑料保鲜薄    B.橡胶手套   C.棉布围裙  D.生铁

(2)微量元素对人体健康的影响很大,如缺   会引起贫血。

(3)多吃水果、蔬菜可补充人体需要的       ,此类物质可调节体内各种化学反应。

(4)目前,人类以化石燃料为主要能源,常见的化石燃料包括煤、石油和       

(5)下列金属制品中,利用金属导电性的是     (填字母序号)。

     

A.黄金饰品    B.铝蒸锅   C.铜导线

(6)铁制品在沙漠地区不易锈蚀的原因是     

答案

(1)AB (2)铁元素 (3)维生素 (4)天然气 (5)C (6)沙漠地区干燥,水分少。

题目分析:(1)依据材料的分类分析判断,有机合成材料简称合成材料,主要包括塑料、合成纤维、合成橡胶三类。

A、塑料保鲜膜是用塑料制成的,塑料属于有机合成材料;

B、橡胶手套一般是用制成合成橡胶的,合成橡胶属于有机合成材料;

C、棉布围裙是由棉花纤维制成的,棉花纤维是天然纤维,不属于有机合成材料;

D、生铁属于铁的合金,是金属材料,不属于有机合成材料。故选AB

(2)根据微量元素的生理作用进行分析解答,铁元素是合成血红蛋白的主要元素,故缺乏会患贫血症。

(3)水果和蔬菜中含有丰富的维生素,从人体所需的营养素角度看,食用蔬菜、水果主要是补充维生素。

(4)化石燃料亦称矿石燃料,它们是古代生物遗体在特定地质条件下经过一系列复杂变化形成的复杂的混合物;主要包括煤、石油和天然气等天然资源。

(5)根据金属的性质进行分析,

A、黄金饰品是利用金属的延展性;

B、铝蒸锅是利用金属的导热性;

C、铜导线是利用金属的导电性,故选C

(6)根据铁生锈的条件分析,铁生锈的条件是氧气和水同时存在;由于沙漠地区干燥,水分少,故铁制品在沙漠地区不易锈蚀。

点评:本题难度不大,但涉及的知识点较多,属于对基础知识的考查,要求学生在平时的学习中要加强相关知识的储备。

单项选择题
阅读理解

第三部分:阅读理解(共16小题;每小题2分,满分32分)

阅读下列短文,从每题所给的A、B、C、D四个选项中,选出最佳选项。

A

In recent years, advances in medical technology have made it possible for people to live longer than in the past. New medicine and machines are being developed every day to extend life. However, some people, including some doctors, are not in favor of these life extending measures, and they argue that people should have the right to die when they want. They say that the quality of life is as important as life itself, and that people should not be forced to go on living when the conditions of life have

become unbearable. They say that people should be allowed to die with dignity (尊严) and to decide when they want to die. Others argue that life under any conditions is always to extend life as long as possible. And the battle goes on and on without a definite (明确的) answer.

57. The best title for the passage is ______.

A. The Right to Live                     B. The Right to Die

C. The Doctor's Duty                     D. Death or Life

58. In recent years, people can live longer than in the past because of______.

A. the development of medical technology     B. big hospitals

C. good medical workers                  D. both B and C

59. In the eyes of the law, whether a dying patient has the right to die or not is up to ______.

A. the doctors                          B. the surroundings

C. the family                           D, the patient himself/herself

60. According to the writer's opinion ______.

A. death is better than life            B. life is better than death

C. neither death nor life is good       D. none of the above