行政监察机关和审计机关都实行双重领导体制。 ( )
A. 对
B. 错
All flights ______ because of the terrible weather, they had to go there by train.
A. having been canceled
B. had been canceled
C. having canceled
D. were canceled
China’’s hi-tech trade surplus has lasted for ________so tar.
A. 4 months
B. 7 months
C. 4 years
D. 7 years
The residents, ______ had been damaged by the flood, were given help by the Red Cross.
A. all their homes
B. all whose homes
C. all of whose homes
D. all of their homes
微信支付 
支付宝支付