问题如下： 
Albania 
Algeria 
Andorra 
Angola 
Antigua and Barbuda 
Argentina 
Armenia 
Australia 
Austria 
Azerbaijan 
Bahamas 
Bahrain 
Bangladesh 
Barbados 
Belgium 
Belize 
Benin 
Bhutan 
Bolivia 
Bosnia and Herzegovina 
Botswana 
Brazil 
Brunei 
Bulgaria 
Burkina Faso 
Burundi 
Cabo Verde 
Cambodia 
Cameroon 
Canada 
Chad 
Chile 
Colombia 
Comoros 
Congo (Brazzaville) 
Costa Rica 
Côte d’Ivoire 
C...