38-38×(1-1)-38÷38,
=38-38×0-38÷38,
=38-0-1,
=37;
故选:B.
Don’t forget where the emergency exits are _____an emergency.
A.in place of
B.in favor of
C.in case of
D.in charge of
苏联存在的起止年代是1917~1991年。( )