系统性硬皮病一般分为()、()、()三种类型。
参考答案:弥漫型硬皮病‖肢端型硬皮病‖CREST综合征
The news shocked the public, _____ to great concern about students' safety at school. [ ]
A. having led
B. led
C. leading
D. to lead
颅内转移性黑色素瘤多来自()
A.消化道
B.皮肤
C.骨骼
D.肺部
E.软脑膜