The representatives from six major international film festivals attended a ____ (week) programme. Maria says that the Venice Film Festival is the oldest film festival in the world, ____is an annual festival that ____ (begin) in 1932. Kathy tells the audience that the Sundance Film Festival deliberately boycotts all Hollywood films and that they don't foresee ever including ____. Isabel says Cannes is ____ festival that can make films famous, at which many films ____ (show) to the public for the first time. At Berlin International Film Festival, Hollywood films are ____the minority, films that are likely to be overlooked at other festivals have a real chance of ____ (become) champions. Mike thinks the Toronto International Film Festival is the ____(two) largest festival in the world. Xu Li says the Shanghai International Film Festival has a good reputation worldwide and they have ____ (entry) from many different countries.

请回答下列问题：

细菌、霉及病毒，要用显微镜才能看清楚，所以通常把它们称作____。