The problem is how ____ the drug abuse remains in America.
A． regular B． practical C． severe D． obvious
The problem is how ____ the drug abuse remains in America.
A． regular B． practical C． severe D． obvious
C
考查形容词辨析。句意：问题是药品滥用在美国有多严重。regular 有规律的，固定的；practical 实用的；severe 严重的；obvious 明显的。