食管癌最常见的病理分型是
A．溃疡型B．蕈伞型C．缩窄型D．髓质型E．腔内型
参考答案：D
Film is not only a universal entertainment mode in modern times, but also an important ________ for cultural communication.
A．transportation
B．appearance
C． controversy
D．vehicle
“Would you be ______ help me?” “I'd very much like to.”
A．kind enough
B．so kind to
C．so kind as to
D．as kind as to
