弥漫性肺间质纤维化的X线表现为（）
A.大阴影
B.胸膜改变
C.肺门改变
D.类圆形小阴影
E.不规则形小阴影
参考答案：E
Because Robert was seen ____ the room, everyone thought he was the thief.
A. to enter B. enter C. entered
Since China has been a member of WTO, English is _____ useful than before. [ ]
A. more
B. most
C. much
D. very
