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

题目简介

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

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:山西省同步题

答案

B

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