A:as if
B:even if
C:in case
D:as long a
—Can a plane fly__________ the Atlantic Ocean?
—Yes, but it needs to go_______ the clouds for hours.
“质量即生命,责任重泰山。一百道工序,一百个放心,生产一流品质”,这是同仁堂永恒的信条。同仁堂赢得国药第一品牌的关键在于( )