________ the help from the doctor, the little boy _________ his life.

A．Apart from; should have lost

B．Without; could lose

C．Except for; would have lost

D．But for; would have lost

向溴化钠、碘化钠的混合溶液中通入足量氯气之后加热，将溶液蒸干，并灼烧片刻，最后残留的物质是（     ）

A．NaCl

B．NaCl、NaBr、NaI

C．NaBr、NaI

D．NaCl、I₂