升结肠癌，CT检查可显示（）
恶性淋巴瘤，CT检查可显示（）
转移性肝癌，CT和PET检查可显示（）
难治性癫痫间歇期，PET可显示（）

A.新月形稍低密度灶

B.病变区FDG代谢减低，CT未见明显异常

C.肠壁增厚，PET示FDG代谢异常增高灶

D.颈、锁骨上窝、纵隔淋巴结肿大，PET见以上淋巴结FDG代谢异常增高灶

E.结节样占位，FDG代谢异常增高灶

Despite the fact that Jack has lived in USA for many years，he finds it no easy to _____himself to its culture and customs.

A．adopt

B．adapt

C．apply

D．concentrate