题目

Don't be frightened by sharks: you are ________ to be hit by lightening than be attacked by a shark. A . 30 times as likely as B . 30 times more likely C . more than 30 times as likely D . 30 times more than likely 答案：B某温度下，将Cl2通入NaOH溶液中，反应得到NaCl、NaClO、NaClO3的混合液，经测定NaClO与NaClO3的物质的量之比为1：3，则Cl2与NaOH溶液反应时被还原的氯元素与被氧化的氯元素的物质的量之比为 A.3：11B.11：3C.1：4D.4：1