痤疮分（）、（）、（）、（）等等。
参考答案：丘疹型痤疮；结节型痤疮；脓肿型痤疮；囊肿型痤疮
It is good ________ for an Arab to stand ________ his friend when they are talking.
A．manners; close to
B．manner; close to
C．manners; closely to
D．manner; closed to
钢包炉使用锰铁来造泡沫渣。
