Ten years ago the population of our village was         that of theirs.

A．as twice large as

B．twice as large as

C．twice as much as

D．as twice much as

Stevens-Johnson综合征是下述哪一种疾病的重症型（）

A.银薢病

B.药疹

C.硬皮病

D.多形红斑

E.结节性红斑