模考800score中的一道题

High score 800 答案 D

The new sports car is heavier than usual for a performance automobile, but it is exceptional because of its high-powered engine.

A) usual

B) it is usual

C) one usually is

D) is usual

E) has been usual

感觉A 好像也可以啊...

我选A.

例子：Although there have been no cases of humans infected by West Nile Virus in the United States so far this year, according to U.S. Centers of Disease Control statistics as of June 11, the virus has been detected earlier than usual in birds and mosquitoes this summer.

Bigger scare than usual for Ohio St. 这是一个新闻标题。