He watches TV twice ____ three times a day.

A．and

B．or

C．from

D．to

阿米巴肝脓肿要和下列哪些疾病鉴别

A．细菌性肝脓肿

B．阿米巴痢疾

C．肠套叠

D．原发性肝癌

E．膈下脓肿