精液液化时间延长主要见于（）
A.精囊炎
B. * * 炎
C.附睾炎
D.前列腺炎
E.淋病
参考答案：D
The fire brigade arrived two hours later after the alarm was sounded,______it was too late to save much of the building.
A．then
B．when
C．which
D．though
