爆破地点附近（）内风流中瓦斯浓度达到1.5%时，严禁爆破。
A、15 m
B、20m
C、25m
参考答案：B
试述分化性甲状腺癌的治疗原则。
The TV Dwelling Narrowness (《蜗居》) is really fantastic. The show has succeeded in _____ much to the audience, which has contributed to its success.
A．giving away
B．going through
C．laying aside
D．getting across
