Chinese Premier Wen Jiabao _______an important speech on April 30,2011 in Indonesia, __________he is currently on an official visit .

A．is delivering ; that

B．was delivered ; in which

C．delivered ; where

D．had delivered ; when

下列关于食品安全监管部门对食品进行检测的说法错误的是（）

A．食品不得实施免检

B．可以向经营者无偿抽样检验的样品和收取检验费用

C．对食品的委托检验应当委托法定食品检验机构进行

D．当经营者对检验结论有异议的，可以进行复检