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） Oj|p`Dzh  
Q1&dB{L  
?kxWj( D  
2008部分英语考博试题--改错2008-10-30 00:29四、改错（1分×10=10分） !5 :[XvI#  
tS\NO@E_Jh  
:H8L(BsI  
The second most important constituent of the biosphere is o 0 #]EMr  
WsDe0F  
liquid water. This can only exist in a very narrow range of temperatures, G(3la3\(  
4W-+k  
since water freezes at 0°C and boils at 100°C. This is |(ju!&  
_5`S)G{  
only a tiny range compared with the low temperatures of some M@@O50~  
? Z fhz  
other planets and the hot interior of the earth, let the temperature __1__ +((31l  
1>{-wL4rc  
of the sun. by controlpanel O}!@28|3"  
&/ FwV'  
As we know, life would only be possible on the face of a __2__ :R\v# )C  
0\^2HjsJ  
planet had temperatures somewhere within this range. __3__ &nw~gSe  
9yAu<a  
The earth’s supply of water probably remains quite fairly constant __4__ r@UY$z  
`bF;Ew;  
in quantity. A certain number of hydrogen atoms, which <s3(
  
F;@&uXYgc  
are one of the main constituents of water, are lost by escaping g}KZL-p4\m  
DN0b.*[`3  
from the atmosphere to out space, but they are probably just __5__ 6+#cyKj  
,
lM2BXz%  
about to be replaced by new water rising away from the depths of the __6__ DQnWLC"u  
Bz~h-  
earth during volcanic action. The total quantity of water is not t+q`h3
 
6\@, Lb  
known, and it is about enough to cover the surface of the globe __7__ )KQum`pO  
Ih" Ol(W  
to a depth of about two and three-quarter kms. Most of it—97% =(\!,S'  
3vD,hL`&  
is in the form of the salt waters of the oceans. The rest is ]zY'w,?D\F  
k@U`?7X  
fresh, but three quarter of this is in the form of ice at the Poles __8__ XePBA J  
j-|0&X1C  
and on mountains, and cannot be used by living systems when __9__ "PtH F`mo  
I j_`= w<  
melted. Of the remaining fraction, which is somewhat fewer __10__ E1_4\S*z  
czRh.kz,  
than 1%of the whole, there is 10-20 times as much stored as underground WE]^w3n9  
JqZ5DjI:  
water as is actually on the surface. There is also a minor,

南开大学