题目

下列说法正确的是（） A . 1 mol H2的质量只有在标准状况下才为2 g B . 标准状况下，1 mol水蒸气的体积大约为22.4 L C . 273 ℃、1.01×105 Pa状态下，1 mol气体体积大于22.4 L D . 0.5 mol O2和0.5 mol N2组成的混合气体体积约为22.4 L 答案：C 阅读理解 　　Today I read something about World Wild Fund(WWF)．Its goal is to protect the environment and animals and build a future in which humans live in harmony with nature．Here are some actions WWF will take： 　　*Protect the world's biological(生物多样化)； 　　*Make sure that natural resources(资源)can be used again and again; 　　*Protect wild animals around the world． 　　And here are some natural facts that WWF has found out： 　　*As much as 20 percent of the world's species could be gone in the next 30 years; 　　* 1998 was the warmest year in history．In the past 120 years, there were 10 warmest years and they all occurred after 1981; 　　*In the last 50 years, more than 75,000 chemicals(化学物质)have been developed and introduced into the environment． 　　This organization is trying to solve these problems．It is also part of the United Nations．With such wonderful organizations like WWF, don't you think we can make the world a better place to live in? (1) The goal of WWF is to ________． [　　] A． protect the environment and animals and build a harmonious future for us B． develop more chemicals C． build reserves for animals D． join the United Nations (2) How many actions will WWF take in the article? [　　] A． 2． B． 3． C． 4． D． 5． (3) Why could the world's species be gone in the next 30 years? [　　] A． Because people kill them． B． Because of the warm weather． C． Because of the bad environment around us． D． Because there are too many species in the world． (4) In the past 50 years, more than 75,000 chemicals have been developed and introduced into the environment, so the environment is becoming ________． [　　] A． hotter and hotter B． worse and worse C． colder and colder D． better and better (5) WWF isn't trying to solve these problems, is it? [　　] A． Yes, it is． B． No, it isn't． C． Yes, it isn't． D． No, it is．