Question

【题目】 the police haven't dismissed the idea, they are looking into other possibilities as well.
A.Before
B.If
C.As
D.While

Answer 1

【答案】D
【解析】句意：虽然警方没有驳回这一想法，但他们也在寻找其他可能性。分析句子前后两句是转折关系，分析四个选项可知，只有while是表示转折关系，故选D项。