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Answer key: Unit 9

of proportion when they occur because they need a Grammar
sensation.
Time clauses
Woman: Hmm. Well I think breaking a record even by a
millisecond is a sensation. 1 1 was invented 2 arrived 3 no longer break
4 occur 5 stopped 6 have spent
Man: But I guess we’re getting close to the limits of
human ability now.
2 1 retires 2 had been working / had worked
Woman: Maybe. The key change occurred when top 3 are driving 4 got 5 am 6 was accepted
sports people stopped being amateurs and devoted 7 get / have got, have passed 8 had written
themselves full time to their sport, not to mention new
technologies which affected shoe or track design. 3 1 at work until she has 2 the last customer(s) had
Perhaps the next big step could be to modify human 3 soon as I have got back 4 had almost/nearly run
genes to produce better athletes.
out of
Man: Yeah, that used to sound like science fiction, didn’t
it? But if they can do it to rats, they’ll soon be able to Prepositions in time expressions
do it to humans too.
4 1 at on 2 at in 3 of in 4 in at 5 of in 6 in at
Woman: Ha, rat Olympics!
7 in on 8 in at 9 in on 10 in at
8 5 B 6 C
Vocabulary
CD 2 Track 09
Extract Three action, activity, event and programme
Woman: When you think that the nearest star’s 4.2 light 1 1 c, e 2 d, i 3 b, h 4 a, f, g
years away, a spaceship using current technology
would take seventy-two thousand years to get there, an 2 1 events, b 2 action, c 3 events, h
unimaginable length of time.
4 programmes, f 5 activities, i
Man: So to make interstellar space travel a realistic
possibility, the spaceship would need a nuclear 3 1 activity 2 programme 3 action 4 programme
explosion to propel it at close to the speed of light. 5 action 6 event 7 activity 8 programme
Woman: Well, that may be technically feasible, but there 9 event 10 activity 11 action 12 event
are treaties which prohibit nuclear explosions from
being used in space programmes. Who knows what 4 social event, spare-time activity, programme of
effect such explosions might have on the environment? (social) events, flurry of activity, call for swift action
Man: True, but a spaceship using more conventional
technology would take so long to get anywhere that
the original occupants wouldn’t live to reach their Reading and Use of English | Part 7
destination, nor would their great-grandchildren,
2 Suggested answers
but only their descendants many generations later
Para 1: the effects of driving very fast
would. Even if there were a couple of hundred people
Para 2: the problems of driving at high speed
prepared to embark on a journey like this, they and
Para 3: comparison with a Formula One car
their descendants would have to live together on the
Para 4: how the engineers produced enough power
ship all their lives, travelling through the emptiness of
Para 5: the problem of aerodynamics
space. What activities would they engage in during all
Para 6: the solution to the aerodynamics
this time? What’d be the point of their existence? That
Para 7: how it feels to drive this car
really would be the central concern. I can imagine them
degenerating into barbarism and fighting after they’ve Suggested underlining: But once you go past 320
spent several generations in space. km/h, at this juncture, when you look at the history
Woman: What a horrific thought! of its development, His engineers were horrified,
Then things got tricky, When this had been done,
9 1 underwent 2 had 3 had 4 has had 5 lose, they hit on the idea, I didn’t care
break 6 making 7 embark 8 engage in
3 1 C 2 A 3 D 4 B 5 E 6 G (Para F is not used.)

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