【正确答案】 C

【答案解析】[听力原文]
   The Islamic State terrorist group claimed responsibility for the attacks at the Brussels airport and metro that killed at least 30 people and injured 130 others.
   Two bombs exploded at Zaventem airport about 8:00 in the morning near the Swissport airline passenger area and a Starbucks coffee shop. At least 11 people were killed in the two airport bombings. About an hour later, another bomb exploded at the Maelbeek metro station during rush hour. A spokesman for the Brussels Metro system said the explosion on a train killed as many as 20 people and injured 55. Belgian Prime Minister Charles Michel told reporters "This is a black moment in our country. Everyone please be calm and show solidarity. What we feared has come to pass. Our country has been struck by attacks which are blind, violent and cowardly."
   When did the second attack happen?
时间题。问的是第二次炸弹爆炸的时间。画线第一句告知我们第一次爆炸时间为早上八点。画线第二句又告知“大约一个小时之后，又发生第二次爆炸。”因此，选项C“九点”为正确答案。