放射疗法禁忌，下列哪项错误
A．呈现恶病质者B．有广泛转移C．高度肺气肿D．癌性空洞，肿瘤过大E．肺门转移切除未彻底
参考答案：E
It is believed that movies, also ________ motion pictures, were introduced into China near the end of the 19th century.
A．to be called
B．to call
C．calling
D．called
提取分离木脂素类成分时，应该注意什么问题
