2-甲基-3-羟基-γ-吡喃酮
参考答案:
解析:
He can't have gone out, ______ the light is still on. [ ]
A. because
B. since
C. as
D. for
根据《消费者权益保护法》,消费者享有如下权力()
A.保障安全权
B.知悉真情权
C.自主选择权
D.获得赔偿权