“姑苏城外寒山寺,夜半钟声到客船”,这是唐诗中的名句.钟声是由于大钟受到撞击发生 产生的,船上的客人听到钟声是通过 传播的,判断出是钟声是根据声音的 .
振动;空气;音色
If he____ that he____ to work there then, everything would be OK now.
[ ]
A. insisted; be sent
B. insisted; was sent
C. had insisted; be sent
D. had insisted; was sent
下列关于急性粟粒型肺结核X线描述,错误的是
A.密度均匀
B.分布均匀
C.大小均匀
D.可见局部钙化
E.阴影边界清晰