内痔早期的典型症状是()
A.痔块脱出
B.无痛性、间歇性便后出血
C.疼痛伴血便
D.肛门常有黏液分泌物
E.肛门瘙痒感
参考答案:B
I want to watch the ball game. Can you _____ the TV?[ ]
A. turn on
B. turn off
C. open
D. close
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