单选题 We are meant to live dangerously and should not be sheltered. Life is a perilous adventure; its richness is in its ______.
【正确答案】 A
【答案解析】[解析] (hazards危险)。句意为：我们预定在危险中生活，因此不应当保护我们。生活是充满艰险的冒险活动，它的丰富多彩在于它的危险。B．security安全，保障；C．peace和平；D．length长度。