《白毛女》是（）执笔创作的划时代剧作。
A.田汉
B.贺敬之
C.曹禺
D.老舍
参考答案：B
You have failed to do what you ________ to and I’m afraid the teacher will blame you.
A．will expect
B．expected
C．will be expected
D．were expected
第二类压力容器的划分范围是什么？
