用ES培养基选择的细菌是（）
A.产黑素类杆菌
B.脆弱类杆菌
C.梭杆菌
D.双歧杆菌
E.优杆菌
参考答案：E
－What made Susan so angry?
－____ in the rain for a long time.
Being kept waiting B. Being kept to wait
C. Because of waiting D. She was kept waiting
使用下列哪个选项可以调用基类中的特定构造方法
A．final
B．this
C．super
D．static
