航空公司的运价类别，“M”表示()。

根据《国际货物销售合同公约》的有关规定，当事人订立合同有书面形式、口头形式和其他形式。

Todayconsumersarefacinganincreasingamountofadvertisingfromcompetingcompanies.Towhatextentdoyouthinkconsumersareinfluencedbyadvertisements?Whatmeasurescanbetakentoprotectthem?

Insomecountriesaroundtheworldmenandwomentendtohavetheirchildrenlateinlife.Whatarethereasonsforthisdevelopment?Whataretheeffectsonsocietyandfamilylife?

Welookforwardtofurtherextensionsofpleasantbusinessrelations.