化学是一门基础自然科学。在①环境保护；②能源开发；③新材料研制；④生命过程探索领域，与化学科学密切相关的是[]A．①②③B．②③④C．①②④D．①②③④-九年级化学

更多内容推荐

• 阅读理解诶。 Tristan da Cunha, a 38-square-mile island, is the farthest inhabited island in the world, acc
• 阅读理解。 For photographers lacking training, experience and even the ability to click a shutter button,
• 阅读理解。 The BRICK Awards are given each year to young people who make our world a better place. These
• 最能证明“东非人”时代的古人类比“露西”少女时代的古人类更进化的特征是东非人时的古人类能[]A．站立B．直立行走C．制造工具D．吃各种食物-七年级生物
• 阅读理解。 The name of Macau comes from the word Magao (A-Ma Temple), which were shrines (圣地) dedicated t
• 阅读理解。 Although most people know there are Seven Wonders in the Ancient World, only few people can na
• 阅读理解。 From the earliest times, man has been interested in art. People have often worked together to
• 阅读理解。 Started in 1636, Harvard University is the oldest of all the many colleges and universities in
• Reading comprehension.Answer the following questions by using the information taken from a dictionar
• Cloze. The British love to think of themselves as polite, and everyone knows how fond they are of th
• 阅读理解。 Given Australia's size and the fact that early settlements were far apart, Australian soc
• 阅读理解。 Marking the opening of a new decade, 2010 has brought us many surprises and delights. It has a
• 森林古猿原本适于树上生活，但后来却演变为地面生活，主要原因是[]A．为了扩张领地，繁衍后代B．为了改变环境，主宰地球C．由于受到树栖猛兽的侵袭D．由于地壳运动和气候变化-七年级生物
• 阅读理解。 FOR many of us, cartoon strips (连环画) are simply one of our pastimes. The popular Japanese mang
• 阅读表达。阅读下面短文并回答问题（请注意问题后的字数要求）。 On October 19,1959, the first Special English program was broadcast
• 阅读理解。 On my first trip in the United States, I went to San Antonio. I was on foot. So I went to only
• 阅读理解。 Valentine's Day (情人节) is named for Saint Valentine an early Christmas churchman who repor
• 化学主要研究物质的_________、__________、___________以及_______________。-九年级化学
• 阅读理解。 If you ask people to name the one person who had the greatest effect on the English language,
• 阅读理解。 The Barbie doll first appeared at the toy fair in New York in 1959. Its creator was Ruth Handl
• 阅读理解。 A vuvuzela is a horn, about a meter long, usually made of a colorful cheap plastic. It is the
• 阅读理解。 What is the single largest cause of sick leave in the UK? The answer is not the common cold or
• 阅读理解。 The IOC today launched the bid process for the Games of the XXXI Olympiad in 2016. The 203 Nat
• 完形填空。 Some myths (神话) are stories told since ancient times to explain the causes for natural happeni
• 阅读理解。 Tea drinking was common in China for nearly one thousand years before anyone in Europe had eve
• 阅读理解。 Almost everyone has read about the Taj Mahal in India. It is one of the most beautiful buildin
• 阅读理解。 The Great Wall of China winds across the country like a giant stone snake. It is 1,500 miles l
• 学习化学能让我们更好的认识生活和世界。下列说法中，正确的是[]A．天然果汁中不含任何化学物质B．化学的研究对象是实验室中的化学药品C．化学不能够根据人们的需要创造自然界不-九年级化学
• 阅读理解。 We live in a technological society where most goods are mass-produced by unskilled labor. Beca
• 阅读理解。 Australia is famous for its beautiful beaches. And Australian people love swimming and going t
• 阅读理解。 The American newspaper has been around for about three hundred years. In 1721, the printer Jam
• 阅读理解。 Massachusetts today looks nothing like it did when the first English settlers arrived. Back in
• 阅读理解。 The Queen's English is now sounding less upper-class, a scientific study of the Queen
• 阅读理解。 Societies all over the world name places in similar ways. Quite often there is no official nam
• 阅读理解。 About three hundred words in the English language come from the names of people. Many of these
• 阅读理解。 "Let's go Dutch, shall we?" Jim said after a dinner to his friends in a restaur
• 阅读理解。 Friendship Day in India falls on the first Sunday of August every year. It is celebrated with
• 阅读理解。 Fidenzio Salvatori is determined that the city of Toronto will have an outdoor marketplace for
• 完形填空。 There are many different ways of seeing a town for the first time. One of them is to walk arou
• 下列关于“化学”的认识不正确的是[]A．化学能够创造自然界不存在的新物质B．化学能够为人类提供新能源C．化学在环境保护中起重要的作用D．化学的发展必然带来人类生存环境的恶化-九年级化学
• 阅读理解 If you are a fan of the Newbery-Award winning book Bridge to Terabithia, then you're going
• 阅读理解。 If you walk slowly through downtown Helsinki (赫尔辛基) during the day, taking in the splendid 19t
• 完形填空。 In Brazil, soccer is1an art form. That is the best 2 for the soccer museum to be built.Brazil
• 阅读理解。 Standard English is that variety of English which is usually used in print, and which is norma
• 阅读理解。 The person behind you constantly kicks the back of your seat. Your talkative seatmate doesn�
• 阅读理解。 Weddings in the United States vary as much as the people do. There are church weddings with a
• 阅读理解。 People need to relax and enjoy themse1ves.One way they can have a good time is to watch a base
• 阅读理解。 The other day, my friend Jane was invited to a 40th birthday party. The time printed on the in
• 阅读理解。 Olaf Stapledon wrote a book called First and Last Men. in which he looked millions of years ah
• 阅读理解。 Bright red post boxes, the Queen and queuing-what do they all have in common? They are all imp