ANSWERS: EXTENSION
UNIT 1
extension
1 1. F 2. T 3. F 4. F
2 1. How did Janet travel on the river?
2. What did she enjoy most?
3. Why did the guide secure a cable to her?
4. Why did they stop at different places in the rainforest?
5. Did she take pictures of her holiday?
3 1. Janet / She travelled on the river on a small boat.
2. She enjoyed the canopy tour most.
3. So she could “fly” over the top of the forest.
4. So they could watch the animals.
5. Yes, she took lots of pictures.
4 Accept all logical and grammatically correct answers.
UNIT 2
extension
1 1. was travelling; F 3. contained; T
2. boarded; F 4. were searching; F
2 1. What was the train carrying?
2. Did the incident occur in Glasgow?
3. What were the robbers wearing when they boarded the train?
4. How much money did the robbers steal?
3 1. was carrying 120 bags of post and cash
2. occurred (at the Bridego Railway Bridge) in Buckinghamshire
3. were wearing masks (and carrying weapons)
4. stole between two and three million pounds in cash
4 Accept all logical and grammatically correct answers.
UNIT 3
extension
1 1. Because they are both good for your health.
2. It helps us to remember, learn new things, imagine things and create.
3. Their stress levels decreased after reading (for approximately six minutes).
2 1. Scientists in the USA have already done research on the effects of reading on the brain.
2. Researchers at the University of Sussex have just completed studying relaxation techniques.
3 Accept all logical answers.
4 Accept all logical and grammatically correct answers.
UNIT 4
extension
1 1. was done; ten years
2. was assisted; doctors and nurses
3. is brought; with few or no doctors
4. are saved; telemedicine
2 1. The surgeon was in Belgium and the patient was in an operating room in Holland about 200 km away.
2. The Belgian surgeon controlled the robotic devices.
3. The surgeon saw a live image of the patient on the monitor.
4. Computers, cameras and high-speed Internet connection are needed for telemedicine.
5. It allows medical personnel far from research centres and hospitals to consult specialists around the world.
6. Ambulances and spacecraft are equipped with telemedicine systems.
3 Accept all logical and grammatically correct answers.
UNIT 5
extension
1 First Conditional: “Experts say the environmental effects will be terrible if these levels aren’t reduced.” (lines 2-3)
Second Conditional: “If you had the choice, would you live in a Smart Planning town?” (line 16)
2 1. Smart Planning promotes an alternative lifestyle that doesn’t depend on cars.
2. They suggest prohibiting cars from city centres and some residential areas, improving public transport and making cities more bicycle- and pedestrian-friendly.
3. Seventy per cent of Vauban families don’t own a car.
3 1. won’t be; many years
2. is going to allow; public transport
3. are going to purchase; car-reduced communities
4 Accept all logical and grammatically correct answers.
UNIT 6
extension
1 1. F 2. F 3. T 4. T
2 1. To win a chess-boxing match, competitors must beat opponents at either chess or boxing.
2. Chess-boxing first appeared in a novel by a French writer and artist.
3 1. competitors had to be in very good mental and physical shape
2. she could understand why that was true
3. he was competing in a match there the next day / the following day / the day after
4 Accept all logical and grammatically correct answers.
UNIT 7
extension
1 1. which / that; F
2. where; T
3. where; F
4. who / that; T
2 1. anything; fish, seaweed
2. somewhere / anywhere; use camouflage / a disguise
3. anyone; A man / A visitor, imitated
3 Accept all logical and grammatically correct answers.
UNIT 8
extension
1 1. they could do the same things that men could do
2. a female explorer / a woman who did things that society thought was only appropriate for men to do
3. travelled the world
2 1. Historians think it was probably the southeast coast of Canada.
2. She walked on her own the entire way.
3. She travelled alone on horseback through the American Rocky Mountains.
3 1. should 5. don’t have to
2. may / might 6. may not / might not
3. must / have to 7. shouldn’t / mustn’t
4. shouldn’t / mustn’t
4 Accept all logical and grammatically correct answers.
UNIT 9
extension
1 1. shorter than 141 3. as fast as
2. not long enough 4. more practical than
2 1. Because the messages are small – only up to 140 characters.
2. They can be connected to as many other twitterers as they want.
3. during wildfires in California, USA / by political demonstrators in various countries / when Stephen Fry was stuck in a lift
4. A follower is a regular reader.
3 Accept all logical and grammatically correct answers.
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