单项选择题
A．declares B．asserts C．announces D．describes
Canada will prohibit smoking in all offices later this ...
单项选择题Canada will prohibit smoking in all offices later this year.（）
A．remove B．ban C．eliminate D．expel
Her speciality is heart surgery.（）A．regionB．siteC．platf...
单项选择题Her speciality is heart surgery.（）
A．region B．site C．platform D．field
Customers often defer payment for as long as possible.（...
单项选择题Customers often defer payment for as long as possible.（）
A．make B．demand C．obtain D．postpone
