星形细胞瘤Ⅰ级（）
A.环形强化
B.明显均匀强化
C.无强化
D.不均匀强化
E.脑回样强化
参考答案：C
It’s not polite to make fun of others.
A．look at
B．laugh at
C．be strict about
D．look for
The CD-ROM is designed Nancy Jackson.
A．of
B．for
C．to
D．by
