问题 选择题

下列说法不正确的是

A.有三个角相等的四边形是矩形

B.三个角都相等的三角形是等边三角形

C.四条边都相等的四边形是菱形

D.等腰梯形的两条对角线相等

答案

A.

题目分析:分别根据矩形、菱形及正方形的性质进行逐一判断即可.

A.有三个角相等的四边形是矩形,错误,符合题意;

B.三个角都相等的三角形是等边三角形,正确,不符合题意;

C.四条边都相等的四边形是菱形,正确,不符合题意;

D.等腰梯形的两条对角线相等,正确不符合题意.

故选A.

考点: 命题与定理.

阅读理解

C

  The villagers of Yaluma in Southern Mexico are some of the poorest people in the country. But now they have an extra source of income.They are being paid to grow and develop forests by the organization in charge of Formula One racing (一级方程式赛车),which pumps 5,500 tons of carbon dioxide (CO2) into the air every year.The idea is that the forests being planted around Yaluma will absorb this amount. It will also provide people there with money while wiping out motor racing's environmental debt.

  Projects like this go under the name of "carbon trading". The basic idea is that governments and companies can buy the right to pump CO2 into the air by investing in green projrvyd. They can buy so-called "carbon credits" from countries which have succeeded in reducing CO2 emissions(排放物).

  Supporters of carbon trading say that it brings money and green technology to poorer countries.It also provides a new way of doing busingess and spreading prosperity. They point out that the process of globalization will give people everywhere the most possible choice of products and services. Carbon trading is just another way of bringing that about. It is a "win - win" situation.

  Opponents argue that nature comes before lifestyle. CO2 emissions need to be reduced, not bought and sold. And they believe that the rich world should lead the way.People might be willing to change the way they live to help save the world, but not to help the rich countries keep a lifestyle that depends on pollution.

  Supporters of carbon trading believe in unlimited growth.Opponents believe that nature sets limits to the choices we make on how to live.It is "don't do " against "can do". It is life against lifestyle.

  It is believed that modern lives are about choice.For example,the world can choose to take the danger of global warming seriously.And the sooner we choose to do it, the more choices we have about what to do next and the more time we have to do it in. We can also choose to pay no attention to the danger of global warming to keep our lifestyles. Then one day nature may give us no choice at all,and maybe not much of a life,either.

  64.Carbon trading is discussed in the text in order to show the importance of ______ .

   A.reducing pollution B.taking care of forests

   C.spreading prosperity D.choosing lifestyle or nature

  65."Carbon credits" may be used to ______.

   A.get the right to pump CO2 into the air

   B.get the right to pump CO2 into poor countries

   C.learn about the way to reduce CO2 emissions

   D.improve the way to reduce CO2 emissions

  66.We can infer from the text that in the "win - win" situation _____.

   A.rich countries perform their duty to help poor countries

   B.poor countries get what they need from rich countries

   C.both rich countries and poor countries get what they need

   D.rich countries learn from poor countries in reducing pollution

  67.In the opinion of people who are against carbon trading,the rich countries should ____.

   A.guide poor countries in reducing CO2 emissions

   B.show by example how to reduce emissions

   C.offer more help to save the world

   D.improve their lifestyles to keep the world clean

单项选择题

随着中秋节的临近,月饼消费“大战”逐渐拉开帷幕。省消协提醒广大消费者:月饼消费要谨慎。
虽然距中秋佳节还有一个多月的时间,但市场上各式月饼已悄然出现。省消协有关负责人介绍,近年月饼消费投诉主要集中在以下几个方面:一是标注的生产日期滞后,即月饼上标注的生产日期晚于实际生产日期,也就是人们常说的“早产月饼”;二是加入过量的防腐剂,不少厂家为了延长月饼的保质期,过量使用防腊剂,损害消费者的身体健康;最后就是旧料新做,也称陈馅月饼,此种月饼极易产生质量问题。还有变相搭售、豪华包装、“无糖”月饼含糖等小问题。
省消协提醒,消费者在购买月饼时要“三看四闻”:一看月饼外观,新鲜月饼外皮细腻有光泽,外观完整,无破损,无露馅,无明显焦斑;二看月饼“身份”,即看清商品的品名、厂家、厂址、生产日期、配方或主要成分,保质期及保存方法;三看“QS”标志,月饼的包装上无“QS”标志,说明未通过质量检验,属不合格食品;四闻月饼气味,合格月饼气味新鲜无异味;五是留意打包销售的其他商品。对捆绑包装中含有保质期要求较严格的副食品,一定要谨慎购买,很可能其中的副食品保质期限即将到期。

什么是“早产月饼”

A.中秋节之前出现的月饼

B.在早上生产出来的月饼

C.生产日期早于实际日期的月饼

D.生产日期晚于实际日期的月饼