— Some Chinese students find it hard to get used to the life in London.  

— Exactly, ______ they've learnt a lot about the city before. [ ]

A. if

B. now that

C. as though

D. even though

持票人委托开户行向承兑银行收取银行承兑汇票票款时，开户行应审查( )。

A．汇票是否是统一规定印制的凭证

B．汇票上填明的持票人是否在本行开户

C．汇票上出票人、承兑人的签章是否符合规定

D．汇票是否作成委托收款背书