题目

What’s the meaning of “dark horse”? It’s someone who wins when no one expects it. Han Xiaopeng took Chinas first gold on snow. He became an Olympic “dark horse” by winning the gold medal in men’s freestyle aerial skiing(自由式滑雪空中技巧) at Turin in Italy. He made two almost perfect jumps for the highest score. Han had never won a world gold medal before, let alone(更不用说) in the Olympics!“I never thought this would happen,” said the 23-year-old. “I feel like I’m in a dream.” Its China's Second gold medal at the Turin Olympics. But more important, Hans 下列物质中含有氧分子的是A、 双氧水 B、空气 C、氯酸钾 D、 氧化汞