6400;2100;12000;80
The village was badly struck by the rare flood last night. The villagers were badly ________ food and shelter.
A.in time of
B.in want of
C.in charge of
D.in possession of
苯丙酮尿症的遗传方式是()。
A.常染色体显性遗传
B.常染色体隐性遗传
C.X连锁显性遗传
D.X连锁隐性遗传
E.伴性不完全显性遗传