2008部分英语考博试题--改错

2008部分英语考博试题--改错2008-10-30 00:29四、改错（1分×10=10分） hrEK mRmF-  
]*):2%f  
'-W p|A  
2008部分英语考博试题--改错2008-10-30 00:29四、改错（1分×10=10分） RsTpjY*Xb  
^@{'! N  
T3M 4r|  
The second most important constituent of the biosphere is &w/aQs~  
Kpj0IfC,10  
liquid water. This can only exist in a very narrow range of temperatures, DPy"FQYZb  
ckhW?T>l  
since water freezes at 0°C and boils at 100°C. This is 9W'#4  
(CuaBHR  
only a tiny range compared with the low temperatures of some 3=;iC6 `  
Z(Q?epyT  
other planets and the hot interior of the earth, let the temperature __1__ d/R:-{J)c  
We9C9)0  
of the sun. by controlpanel (qB$I\  
3fM  
As we know, life would only be possible on the face of a __2__ '<1T>|`/t  
N'2u`br4KP  
planet had temperatures somewhere within this range. __3__ [!bTko>rSB  
of{wZU\J+9  
The earth’s supply of water probably remains quite fairly constant __4__ if^\Gs$  
Z
H&%D*a&  
in quantity. A certain number of hydrogen atoms, which UN,@K9  
4fpz; 2%  
are one of the main constituents of water, are lost by escaping :Q&8DC#]  
! daXF&q  
from the atmosphere to out space, but they are probably just __5__ 7CwG(c/5  
7b'XQ/rs  
about to be replaced by new water rising away from the depths of the __6__ 5^P)='0*  
$i~DUT(  
earth during volcanic action. The total quantity of water is not gX6'!}G
8]  
skZxR5v3~L  
known, and it is about enough to cover the surface of the globe __7__ jQsucs5$h  
2/>AmVM  
to a depth of about two and three-quarter kms. Most of it—97% 4b6$Mj  
KY4|C05,  
is in the form of the salt waters of the oceans. The rest is ds7I .Q'  
{!6
!z,  
fresh, but three quarter of this is in the form of ice at the Poles __8__ G9}[g)R*  
c%i/ '<Afr  
and on mountains, and cannot be used by living systems when __9__ HOu<,9?>Q  
gD&%$&q
  
melted. Of the remaining fraction, which is somewhat fewer __10__ nm\n\j~  
oOQnV(I  
than 1%of the whole, there is 10-20 times as much stored as underground t{84ioJ"$  
QD /| zi  
water as is actually on the surface. There is also a minor,

南开大学