______ the 1500s ______ the first European explored the coast of California.

A．It was not until... when

B．It was until... when

C．It was not until... that

D．It was until... that

与黄曲霉毒素有关的肿瘤是

A．肝癌

B．食管癌

C．结肠癌子宫颈癌

D．鼻咽癌