He always dreams of ______ a chance for him to go abroad for further study．

A．there being

B．there to be

C．there is

D．being

入境动植物及其产品在报检时，除提供合同、发票、装箱单、各运程提单等贸易单证外，还应按要求提供( )出具的检疫证书。

A．输出国官方检验机构

B．出口商

C．输出国公正机构

D．发货人