Cover of the textbook Speakout Pre-Intermediate - Students' Book

The key answer of exercise 4

The key to exercise solutions in chapter 9.3 - It could be because ... for the textbook Speakout Pre-Intermediate - Students' Book with authors Antonia Clare and J. J. Wilson from Pearson Education

Question

Listen to two people discussing the questions in the quiz. As you listen, make a note of the correct answers.

Answer

  1. Rats are used to rescue people. They can move in small spaces and they have a good sense of smell, so they can find people.
  2. Abandoned dogs are taken to prisons and then the prison inmates take care of them until the dogs are adopted.
  3. Dolphins are used to protect areas of water. They can detect swimmers who shouldn't be there.
  4. Gerbils can smell people's adrenaline when people are excited, scared or angry. The airport security bosses hoped the gerbils would smell terrorists or other criminals in airports.
  5. Seals can dive deep down into freezing water. Scientists can attach research equipment to the seals' bodies.