单选题 The US military says the joint military action is aimed to _______.

【正确答案】 B
【答案解析】[听力原文] 27-28
The US military says American and British warplanes have attacked Iraqi military, radar and anti-aircraft artillery sites in southern Iraq. It says the goal was to reduce the threat to aircraft that enforce the no-fly zone for Iraqi planes. An Iraqi spokesman says the Western planes bombed civilian targets before they were driven off by Iraqi gunners.
抓听句子“It says the goal was to reduce the threat to aircraft that enforce the no-fly zone for Iraqi planes”。