The key answer of exercise 7
The key to exercise solutions in chapter Revision 5 for the textbook Wider World 4 - Student's Book with authors Suzanne Gaynor, Kathryn Alevizos and Carolyn Barraclough from Pearson Education
Question
Listen. Then listen again and write down what you hear.
Answer
Space is much bigger than the galaxy where we live. If you wanted to count all the stars, it wouldn’t be easy. In fact, astronomers can’t count them, even with strong telescopes. That's because there are millions of stars and most of them are light years away from Earth.
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