四级练习2011.10.14
[audio]http://sound.yywz123.com/tingbbs/cet4/cet420111014.mp3 [/audio](1)_______________________.In the first documented case of its kind,two wildlife biologists, writing in a journal,report that deer have been gulping down a kind of small fish,which die off each spring and summer,washed up on the beach.It is reported that the average deer eat 235 fish during each of three daily trips to the beach.The white-tailed deer were introduced to an island in the lake in 1926.The first fish die offs began in the late fifties.(2)_______________________.Someone once spotted a deer eating a dead salmon.It is also presumed that deer eat bird,but don't get the opportunity to do it very often.
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