听力原文：Farmers and their supporters protested Wednesday in hundreds of rural locations i

听力原文： Farmers and their supporters protested Wednesday in hundreds of rural locations in Argentina on the two-week mark of the farmers' strike against an increase in export taxes for their products. Women in Cordoba, Argentina, bang pots in support of the farmers' strike on Wednesday. In some places, protesters blocked roads to the capital. On those roads, the farmers have stopped trucks transporting food and other farm-related products, Other vehicles were allowed to pass.The farmers' federations have said that the strike will continue for an undetermined period of time. The strike's impact already is visible on the nearly empty supermarket shelves in cities. Butchers and supermarkets were among the first hit.The noise of Tuesday's caeerolazos evoked memories of the protests in 2001 that forced then-president Fernando de la Rua from power.

The farmers' federations have said that the strike will last for

A．two weeks.

B．a month.

C．an unknown period.

D．three days.