题干

在森林中旅游时,请不要随意丢弃饮料瓶。因为下雨过后,饮料瓶内容易进入水,相当于一个____ 镜,对太阳光有____ 作用,容易引发火灾。

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凸透,会聚

同类题3

政治民主化是人类历史发展的必然趋势,古今中外都在不断地探索。阅读下列材料,回答问题。

材料一:雅典公民大会的设置主要经历了梭伦、克里斯提尼和伯利克里的改革。公民大会是全体公民参与城邦事务的政治机构,是雅典唯一的立法机构,以各种方式完全控制着雅典的行政和司法,一切重大问题都只能在公民大会上进行最终决议。在形式上,它是唯一囊括了所有雅典公民的政治机构。在实践上,它给予雅典公民最好的民主政治训练。

——《雅典公民大会初探》

材料二:第一条中华人民共和国是工人阶级领导的、以工农联盟为基础的、人民民主专政国家。

第二条中华人民共和国的一切权力属于人民。人民行使权力的机关是全国人民代表大会和地方各级人民代表大会。全国人民代表大会、地方各级人民代表大会和其他国家机关一律实行民主集中制。

——1954年《中华人民共和国宪法》

材料三:光荣革命后,法律规定,农村地区议员必须有年收入600英镑以上的地产,城市议员年收入必须在300英镑以上。

1832年改革法案规定,取消人口不满2000人的56个“衰败地区”议席,另外31个人口在2000至4000之间的选区分别减少一个议席,空出143个席位中,65个给了新兴大工业城市。

1867年改革法案再次对议席分配作了调整,取消了46个“衰败选区”,空出的52个议席分给了大城市和较大的郡。法案还降低了选民财产资格,它规定,在城市中凡拥有单独住宅的房主(不论其价值多少)和每年缴纳房租10镑以上的房客,只要在选区内居住一年以上都有选举权:在各郡,每年交纳地租12镑以上租佃者和每年收入5镑以上的土地所有者都有选举权。

1918年法案中,授予了年满30岁的妇女以选举权。……1928年,又将妇女选举权的年龄限制降为21岁,成年公民普选权终于真正得以实现。

——摘编自程汉大《英国政治制度史》等资料

同类题5

Mobile phones and the Internet have improved our life in many ways. However, along with improvements, they also brought a number of worrying problems.
Many car accidents are caused by mobile phones. You can use many new mobile phones to get on the Internet .This can be very convenient, but some drivers get on the Internet while driving. Driving needs all our attention. By looking at their mobile phones and not at the road, these insensitive(不专注的) drivers are a danger to us all.
Many of the dangers of the Internet are well known. Children who visit websites without their parents' permission sometimes talk to older people they don't know and put themselves in great danger. People with blogs(博客) sometimes post(张贴) embarrassing photographs of people they don't know on their websites without permission. There are also people who use the Internet to get personal information that we do not want them to have.
Mobile Phones and Internet Safety Tips
l If you need to use a mobile phone when you drive, use a "hand –free" phone.
l In difficult driving situation such as rain or snow, don't use your phone at all.
l Do not make very important phone calls while driving. They take your attention off the road.
l Tell your children not to talk with anyone they do not know on the Internet.
l In an embarrassing situation, pay attention to people around you. People will be shy about taking your picture if they know you're paying attention.
l Refuse to give out any personal information on the Internet.