降水有明显季节变化的两种陆地自然带是( )。①热带雨林带 ②热带草原带③大陆西岸的温带落叶阔叶林带 ④亚热带常绿硬叶林带
____the sketch of Xiao Shenyang made a _____has been known to us all.
That Xiao Shenyang was elected_____model worker of May Day caused ____enthusiastic discussion in China.
----What do you know the _____ of are the pig influenza in humans? ---- usually similar to regular human seasonal influenza .
People go out with masks,________.
The dead rate is _____ pigs and recovery usually ______ within 7-10 days. A low in; occursB.rich in;happens C.high in; came aboutD.poor in;took place