问题
选择题
________ is now no ________ that global warming is a security threat to us all. [ ]
A. There; doubt
B. There; need
C. It; doubt
D. It; need
答案
答案：A
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________ is now no ________ that global warming is a security threat to us all. [ ]
A. There; doubt
B. There; need
C. It; doubt
D. It; need
答案：A