阅读短文并把下面与it有关的短语填入空白处OnSaturdayhundredsofmillionsofpeoplearoundtheworldwillcelebratethe30thanniversaryofEarthDay．Morethan4000organizationsareplanningeventsinal

Question

阅读短文并把下面与it有关的短语填入空白处

　　On Saturday hundreds of millions of people around the world will celebrate the 30th anniversary of Earth Day．More than 4 000 organizations are planning events in almost 200 countries． 　　1　　 to be the largest environmental event in history in 2000．

　　Earth Day is a yearly call for people to work together to save the planet． 　　2　　 that the first Earth Day took place in the United States．Former Senator Gaylord Nelson started Earth Day because he believed few public officials were concerned about the environment． 　　3　　 to educate people about environmental issues．

　　Earth Day led to the passage of important laws in the United States．Those laws included the clean air and clean water acts and the creation of the Environmental Protection Agency．The environment in the United States is better than 　　4　　 ．There are stronger laws and better technologies．And more people are concerned about the issues．But there are major threats around the world．These include overpopulation the reduction in animal and plant species and the rising temperature of the Earth．

　　 　　5　　 that are still the most serious problems in many developing countries．The Earth’s growing population is putting more pressure on land and water supplies．The destruction of tropical forests threatens rare kinds of animals and plants．And that burning fuels such as oil and coal is causing a dangerous warming of the Earth． 　　6　 　 that the global warming could be affecting．

A．It is not only the weather but also the increasing water levels and changing the planet’s structure

B．it was 30 years ago

C．It was on April 22nd 1970

D．It is expected

E．It is air and water pollution

F．It is his aim

Answer 1

答案：
解析：
　　1．D　it指Earth Day。 　　2．C　此处是强调结构，被强调的是时间状语on April 22nd 1970。还原为陈述句是The first Earth Day took place in the United States on April 22nd 1970． 　　3．F　此处的it是形式主语，真正的主语是不定式。 　　4．B　it指时间。美国的环境状况比30年前好得多。 　　5．E　此处是强调结构，被强调的是主语air and water pollution。还原为陈述句是Air and water pollution are still the most serious problems in many developing countries． 　　6．A　此处是强调结构，被强调的是宾语not only the weather but also the increasing water levels and changing the planet’s structure。还原为陈述句是The global warming could be affecting not only the weather but also the increasing water levels and changing the planet’s structure．