与慢性附睾炎鉴别最困难的疾病是
A．急性前列腺炎 B．睾丸肿瘤C．睾丸炎 D．附睾囊肿E．附睾结核
参考答案：E
Having checked the doors were closed and ______ all the lights were off, the boy opened the door to his bedroom.
A．why
B．that
C．when
D．where
以下哪一种不是微小企业的法律形态（）
A.乡镇企业
B.个体工商户
C.合伙企业
D.有限责任公司
