【题目】The books on the desk, covers are shiny, are prizes for us.
A.which
B.what
C.whose
D.that

【答案】C
【解析】句意：桌上的书是给我们的奖励，那些书的封面闪闪发光。本题考查定语从句的关系词，先行词为the books，和covers之间存在所有关系，故选择C，意为书的封面。