The Dead Sea is so salty it’s hard for anything to live in it, is why it’s called the Dead Sea.
A. that, which
B. that, that
C. /, that
D. /, what
网友回答
(答案→)A. that, which
B. that, that
C. /, that
D. /, what
解析：考查状语从句和定语从句。句意：死海太闲了以至于任何生物无法在其里，这就是它称为死海的原因。so + adj + that...引导结果状语从句。that不能引导非限制性定语从句，which可引导非限制性定语从句，代指主句一句话所说的内容。故A正确。