以下属于皮肌炎的临床亚型的有()
A．多发性肌炎
B．特发性皮肌炎
C．合并恶性肿瘤的皮肌炎
D．无肌病性皮肌炎
参考答案：A, B, C, D
The fans ______ to see the pop singer the whole afternoon, and they won’t leave until he turns up.
A．have been waiting
B．waited
C．had waited
D．would have waited
计划检修分为年、（）、半月三种。
A.月
B.季度
C.周
