Answer — Exercise 3
7.7 - Use of English·Focus 4 (2nd edition) - Student's Book
Întrebare
Choose the correct option, then answer the questions.
Răspuns
- preceded
- historic
- Currently
- affected; sight
- advice
Answers:
- To locate submarines.
- He made GPS available to all civilian airlines.
- Four systems US / Russia / EU / China.
- You’d be up to six miles away from your true location.
- By measuring the melting of the ice caps.