15. Digital life - 16. Amazing science - REVIEW 4 » Стр.91-(4)

4. Match the highlighted words in the article to the meanings. 1. stay in the air without support – float; 2. the reason for doing something – aim; 3. something for catching animals – trap; 4. information that shows something is true – proof; 5. allow something to fall – drop; 6. something difficult that you succeed in doing – achievement.