At the beginning of a speech, it is very important to grab the audience’s attention and make them interested in     ________you have to say.    

A．which

B．what

C．that

D．who

抗战胜利后，__________对中国的经济侵略，是造成民族工业陷入困境的主要原因之一。 [ ]

A、英国

B、苏联

C、法国

D、美国