Question

It was _____ great shock to the world that two airplanes crashed into _____ World Trade Centre in New York on Sept．11．

A．a；／	B．the；the
C．a；the	D．／；the

Answer 1

C

 世贸大厦是由普通名词构成的专有名词，其前应使用定冠词。shock在这里意指“令人震惊的事”，为可数名词。