Scientists are racing________time in order to find a cure for bird flu. [ ]A. along with B. againstC

题目简介

Scientists are racing________time in order to find a cure for bird flu. [ ]A. along with B. againstC

题目详情

 Scientists are racing________time in order to find a cure for bird flu.
[     ]
A. along with  
B. against  
C. around    
D. ahead of
题型:单选题难度:中档来源:同步题

答案

B

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