______ the end, they arrived in the city ______ the cold morning of January 8th, 2009. [ ]

A.In, at

B.In, on

C.By, on

D.At, in

乳牙萌出顺序为（）

A.乳中切牙→乳侧切牙→乳尖牙→第一乳磨牙→第二乳磨牙

B.乳中切牙→乳侧切牙→第一乳磨牙→乳尖牙→第二乳磨牙

C.乳中切牙→乳侧切牙→第一乳磨牙→第二乳磨牙→乳尖牙

D.乳侧切牙→乳中切牙→第一乳磨牙→乳尖牙→第二乳磨牙

E.乳侧切牙→乳中切牙→乳尖牙→第一乳磨牙→第二乳磨牙