单项选择题
A. 50 underground stations were made waterproof. B. A flood wall was built. C. An alarm system was set up. D. Rescue teams were formed.
A. The Syrian President. B. The PLO leader. C. The Jordanian President. D. The Israeli Prime Minister.
A. It took place just one hour after two other bombings. B. It took place on Thursday. C. It took place on Tuesday when the train was entering a station. D. It took place on Tuesday when the train was leaving a station.