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考研
The tendency of the human body to reject foreign matter is the main obstacle to successful organ transplantation.
The tendency of the human body to reject foreign matter is the main obstacle to successful organ transplantation.
admin
2012-07-24
50
问题
The tendency of the human body to reject foreign matter is the main
obstacle
to successful organ transplantation.
选项
A、factor
B、constituent
C、break
D、barrier
答案
D
解析
obstacle阻碍,障碍。factor因素,要素;constituent成分,组成要素;break破损,破裂;barrier障碍,阻碍。故答案选D。
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在职申硕(同等学力)英语
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