第5题
A.which was the only mammal in New Zealand
B.which was introduced to New Zealand about 1000 years ago
C.which is an introduced flightless bird
D.which is a native flightless bird
第6题
A.avoid
B.prevent
C.hinder
D.resist
第7题
A.which is a native flightless bird
B.which was the only mammal in New Zealand
C.which was introduced to New Zealand about 1000 years ago
D.which is an introduced flightless bird
第8题
A.make
B.enable
C.force
D.realize
第9题
A.us, it
B.us, itself
C.ourselves, itself
D.ourselves, it
第10题
A.A. are you
B.B. aren' t you
C.C. isn't you
第11题
Some officials believe bird flu spread to Africa mainly due to ______.
A. the trade of farm birds
B. the waste and liquids of infected birds
C. the fact that sortie people touched sick birds or any infected part of sick birds
D. the virus changed and started spreading in some new forms