The days are gone ____ we studied together at college, but I can still remember your lovely voice. [ ]

A. which

B. in that

C. that

D. when

狂犬病的诊断依据是（）

A.与狂犬患者有密切接触史

B.荧光抗体法检查分泌物中有病毒抗原

C.患者出现恐水、怕风、兴奋、大量流涎等症状

D.咬人动物肯定有狂犬病

E.脑脊液检查发现白细胞及蛋白增高，糖及氯化物减少