Topic 1: Increasing travels between countries enable people to learn different cultures or to increase tension between people from different countries

recovery 
from the worst environmental threats and thereby improve the 
quality of life. Meanwhile, space research provides a new 
platform 
on which scientists can carry out 
experiments and make new discoveries in a variety of fields, such as agriculture. 
As suggested above, in locating new resources, positioning new settlements, addressing environmental 
concerns and facilitating scientific discovery, space research will prove to be not only worthwhile, but 
also crucial to the survival and sustainability of human civilisation. 
1.
 
value = merit = worthiness = worth 
2.
 
divert = redirect = reroute = switch 
3.
 
overuse = overexploitation 
4.
 
abound = be plentiful = thrive = flourish = proliferate = grow in great numbers 
5.
 
adventure = voyage = journey 
6.
 
re-settlement = relocation = immigration 
7.
 
sewage = sullage = waste water 
8.
 
unmanageable = uncontrollable = unruly 
9.
 
backup = candidate = replacement 
10.recovery = healing = recuperation 
11.platform = stage 

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