请选择ABCD5?5h'F-X/p3M Yellow River is the second longest _________ river in our country.(X8[3y9V3G'j6P*f)R
A./(X8[3y9V3G'j6P*f)R
B.The(X8[3y9V3G'j6P*f)R
C.An(X8[3y9V3G'j6P*f)R
D.A(X8[3y9V3G'j6P*f)R