It is human activities on the earth that are to ______global warming.

A．be blamed for

B．blame for

C．take charge of

D．be responsible with

如果在扣押张某货物后，张某仍不缴纳税款，税务机关可以采取的措施有( )。

A．将扣押的货物交由依法成立的拍卖机构拍卖

B．若扣押的货物无法拍卖，可以交由当地商业企业代为销售

C．责令提供纳税担保

D．向人民法院提起行政诉讼