1．All passengers arriving at Heathrow from outside Britain .
A．must go through either the Passport Control or the Customs
B．must go through the Customs，but not the Passport Control
C．must go through the Passport Control and the Customs
D．don’t have to be examined
答案 C
解析 细节理解题。由Passport Control中的第一句话及Customs中的第一句话可知选C。
