The ____________ of news that a flood is coming is a staff working in the weather bureau.
#11848
A
resource
B
origin
C
root
D
source
推荐题目
He finished middle school        .
#14510
A
in twenty in 1950s
B
at twenty in the 1950s
C
in twenties in the 1950s
D
at twenties in the 1950s