六、综合填空(10分)
Only about 2.5 per cent of the earth's water is freshwater.Of that,nearly 70 per cent is
frozen in huge and 1.
peaceful
(peace)glaciers and ice caps(冰川和冰冠).About 30
per cent is groundwater,which is important for human
2..
development
(develop)and daily
life.It hides under mountains,plains and even deserts,and is called aquifers(含水层).
Groundwater is 3
an
important part of earth's water cycle.Some groundwater
naturally rises and 4
pours
(pour)out onto earth's surface through springs(泉).In
fact,we use 200 times more groundwater than oil.
As human−caused c lli mate change dries out parts of the planet,the need for groundwater
will rise. 5
At
the same time, climate change may make storms much
6.
stronger
(strong).Heavier rains are more likely to rush 7
directly
(direct)into
lakes and rivers than flow into soil.So there may be less groundwater.
Meanwhile,human activities
8.
have polluted
(pollute)groundwater in many places over
the years.Chemicals from farming or mining(采矿)flow into these aquifers.
What can 9
be done
(do)?Reduce pollution and find ways to purify(净化)
groundwater.
10.
Unless
we act now,we will hardly get clean water in the future.