一、语境填词( 根据首字母或汉语提示,用本单元所学单词填空 )
1. Having studied volcanoes for many years, I am still amazed at their beauty as well as their potential to cause great d.
2. Even if you live a green lifestyle at home, it’s possible to ignore the i your travels could have on the environment.
3. They raised chickens for eggs, pigs and c for meat, and cows for milk and cream.
4. When we choose food, we must keep in mind that the food we choose should give us the n we need.
5. After repeating the experiment hundreds of times under controlled conditions, the scientist concluded that the results were a correct.
6. It is rather embarrassing that we still do not know how many( 物种) there are in the world today.
7. We should be aware that the souvenirs we buy( 在国外) might be made from endangered species, and we must avoid purchasing them.
8. The universities have expanded,( 从而) allowing many more people the chance of higher education.
9. After a week at sea, it was good to feel the earth( 在……下面) our feet again.
10. As the( 气候) warms up, the ice caps will melt.

二、词汇变形( 用括号中所给词的适当形式填空 )
1. When the explorers first set foot upon the continent of North America, the skies and lands were alive with an astonishing( vary) of wildlife.
2. Located at the foot of the( tower) Alps, Innsbruck, an excellent Austrian city, offers guests a chance to appreciate a blend of old and new.
3. The( apply) of new scientific discoveries has greatly increased industrial efficiency in our country.
4. There is research showing that houseplants can clean the air around them by removing( harm) gases.
5. In my opinion, his film, over two hours in( long), is a fine study of family life.
6. It’s my pleasure and privilege to speak for all the members of our( organize).
7. To prevent the( extinct) of endangered species, governments should set up more nature reserves.
8. Climate change is posing a serious threat to the( survive) of coastal ecosystems.
9. It is reported that more than two million dollars has been spent on( agriculture) research up to now.
10. There is no proof that the( disappear) of bees has a close connection with the radiation of mobile phones.